diff --git a/NEWS b/NEWS
index 6d9f3c3fe..34aa85bed 100644
--- a/NEWS
+++ b/NEWS
@@ -12,6 +12,7 @@ Enhancements
  - [web] all batch operations can now be performed on selected messages in advanced search mode
  - [web] add date picker to change date, week, or month of current Calendar view
  - [web] style cancelled events in Calendar module
+ - [web] replace sortable library for better support with Firefox
  - [oc] better handling of nested attachments with OpenChange
 
 Bug fixes
diff --git a/UI/Templates/PreferencesUI/UIxPreferences.wox b/UI/Templates/PreferencesUI/UIxPreferences.wox
index 9d1f51b16..1ad67389e 100644
--- a/UI/Templates/PreferencesUI/UIxPreferences.wox
+++ b/UI/Templates/PreferencesUI/UIxPreferences.wox
@@ -8,7 +8,7 @@
     xmlns:label="OGo:label"
     className="UIxPageFrame"
     title="title"
-    const:jsFiles="Common.js, vendor/ng-sortable.min.js, Preferences.js, Preferences.services.js, Mailer.services.js, Contacts.services.js, vendor/ckeditor/ckeditor.js, vendor/ckeditor/ck.js">
+    const:jsFiles="vendor/ckeditor/ckeditor.js, vendor/ckeditor/ck.js, vendor/ng-sortable.min.js, Common.js, Preferences.js, Preferences.services.js, Mailer.services.js, Contacts.services.js">
 
   <main layout-fill="layout-fill" ui-view="preferences"
         ng-controller="navController"><!-- preferences --> </main>
@@ -675,13 +675,16 @@
           <md-tab id="mailFiltersTab"
                   aria-controls="mailFiltersTab-content"
                   label:label="Filters">
-            <div role="tabpanel" aria-labelledby="mailFiltersView"
+            <md-content role="tabpanel" aria-labelledby="mailFiltersView"
                  id="mailFiltersView-content">
-
-              <div class="md-padding" ng-sortable="{ animation: 150, draggable: '.layout-row', handle: '.sg-sortable-grip', ghostClass: 'sg-sortable-ghost', chosenClass: 'sg-sortable-chosen' }">
+              <div class="sg-list-sortable"
+                   ng-model="app.preferences.defaults.SOGoSieveFilters"
+                   as-sortable="{ scrollableContainer: '#mailFiltersView-content', containment: '.sg-list-sortable', containerPositioning: 'relative', orderChanged: preferencesForm.$setDirty }">
                 <div layout="row" layout-align="start center"
-                     ng-repeat="item in app.preferences.defaults.SOGoSieveFilters track by $index">
-                  <md-button class="md-icon-button" md-no-ink="md-no-ink">
+                     ng-repeat="item in app.preferences.defaults.SOGoSieveFilters"
+                     as-sortable-item="as-sortable-item">
+                  <md-button class="md-icon-button" md-no-ink="md-no-ink"
+                             as-sortable-item-handle="as-sortable-item-handle">
                     <md-icon class="sg-sortable-grip">drag_handle</md-icon>
                   </md-button>
                   <md-checkbox
@@ -709,7 +712,6 @@
                 </div>
               </div>
 
-              <!-- FIXME: move up/down to be replaced by DnD? -->
               <div layout="row" layout-align="end center">
                 <md-button type="button"
                            ng-click="app.addMailFilter($event, preferencesForm)"
@@ -717,7 +719,7 @@
                   <var:string label:value="Create Filter"/>
                 </md-button>
               </div>
-            </div>
+            </md-content>
           </md-tab>
         </var:if>
         <!-- END OF MAIL > FILTERS -->
diff --git a/UI/Templates/SchedulerUI/UIxCalMainView.wox b/UI/Templates/SchedulerUI/UIxCalMainView.wox
index 3474d1eea..e78ebb0e4 100644
--- a/UI/Templates/SchedulerUI/UIxCalMainView.wox
+++ b/UI/Templates/SchedulerUI/UIxCalMainView.wox
@@ -8,7 +8,7 @@
     xmlns:label="OGo:label"
     className="UIxPageFrame"
     title="title"
-    const:jsFiles="vendor/ckeditor/ckeditor.js, vendor/ckeditor/ck.js, Common.js, vendor/ng-sortable.min.js, Preferences.services.js, Contacts.services.js, Mailer.services.js, vendor/angular-file-upload.min.js, Scheduler.js, Scheduler.services.js,  vendor/FileSaver.min.js">
+    const:jsFiles="vendor/ckeditor/ckeditor.js, vendor/ckeditor/ck.js, vendor/ng-sortable.min.js, Common.js, Preferences.services.js, Contacts.services.js, Mailer.services.js, vendor/angular-file-upload.min.js, Scheduler.js, Scheduler.services.js,  vendor/FileSaver.min.js">
   <script type="text/javascript">
     var firstDayOfWeek = <var:string value="firstDayOfWeek"/>;
     var dayStartHour = <var:string value="dayStartHour"/>;
@@ -36,8 +36,8 @@
                 md-component-id="left" md-is-locked-open="isGtMedium"
                 ng-class="{ 'sg-close': leftIsClose }">
       <var:component className="UIxSidenavToolbarTemplate" />
-      <md-content class="md-flex" md-scroll-y="md-scroll-y"
-                  ng-class="{'sg-list-sortable': !app.sortableCalendars.disabled}"
+      <md-content id="sidenav-content" class="md-flex" md-scroll-y="md-scroll-y"
+                  ng-class="{'sg-list-sortable': app.sortableMode}"
                   md-colors="::{ backgroundColor: 'default-background-300' }">
         <!-- User's calendars -->
         <section>
@@ -52,8 +52,10 @@
               </md-button>
             </div>
           </md-subheader>
-          <md-list ng-sortable="app.sortableCalendars">
-            <md-list-item ng-repeat="calendar in app.service.$calendars | filter:app.filter">
+          <md-list ng-model="app.service.$calendars"
+                   as-sortable="app.sortableCalendars" is-disabled="!app.sortableMode">
+            <md-list-item ng-repeat="calendar in app.service.$calendars | filter:app.filter"
+                          as-sortable-item="as-sortable-item">
               <md-checkbox ng-model="calendar.active"
                            ng-class="calendar.getClassName('checkbox')"
                            ng-true-value="1"
@@ -76,8 +78,11 @@
                        sg-enter="app.renameFolder(calendar)"
                        sg-escape="app.revertEditing(calendar)"/>
               </md-input-container>
-              <md-menu class="md-secondary" label:aria-label="Options"
-                       md-colors="::{color: 'accent-400'}">
+              <md-button class="md-secondary md-icon-button" md-no-ink="md-no-ink"
+                         as-sortable-item-handle="as-sortable-item-handle">
+                <md-icon md-colors="::{color: 'accent-400'}">drag_handle</md-icon>
+              </md-button>
+              <md-menu class="md-secondary sg-list-sortable-hide" label:aria-label="Options">
                 <md-button class="md-icon-button" label:aria-label="Options"
                            ng-click="$mdOpenMenu()"
                            md-menu-origin="md-menu-origin">
@@ -152,8 +157,10 @@
               </md-button>
             </div>
           </md-subheader>
-          <md-list ng-sortable="app.sortableSubscriptions">
-            <md-list-item ng-repeat="calendar in app.service.$subscriptions | filter:app.filter">
+          <md-list ng-model="app.service.$subscriptions"
+                   as-sortable="app.sortableCalendars" is-disabled="!app.sortableMode">
+            <md-list-item ng-repeat="calendar in app.service.$subscriptions | filter:app.filter"
+                          as-sortable-item="as-sortable-item">
               <md-checkbox ng-model="calendar.active"
                            ng-class="calendar.getClassName('checkbox')"
                            ng-true-value="1"
@@ -177,8 +184,11 @@
                        sg-enter="app.renameFolder(calendar)"
                        sg-escape="app.revertEditing(calendar)"/>
               </md-input-container>
-              <md-menu class="md-secondary" label:aria-label="Options"
-                       md-colors="::{color: 'accent-400'}">
+              <md-button class="md-secondary md-icon-button" md-no-ink="md-no-ink"
+                         as-sortable-item-handle="as-sortable-item-handle">
+                <md-icon md-colors="::{color: 'accent-400'}">drag_handle</md-icon>
+              </md-button>
+              <md-menu class="md-secondary sg-list-sortable-hide" label:aria-label="Options">
                 <md-button class="md-icon-button" label:aria-label="Options"
                          ng-click="$mdOpenMenu()"
                          md-menu-origin="md-menu-origin">
@@ -229,8 +239,10 @@
               </md-button>
             </div>
           </md-subheader>
-          <md-list ng-sortable="app.sortableWebCalendars">
-            <md-list-item ng-repeat="calendar in app.service.$webcalendars | filter:app.filter">
+          <md-list ng-model="app.service.$webcalendars"
+                   as-sortable="app.sortableCalendars" is-disabled="!app.sortableMode">
+            <md-list-item ng-repeat="calendar in app.service.$webcalendars | filter:app.filter"
+                          as-sortable-item="as-sortable-item">
               <md-checkbox ng-model="calendar.active"
                            ng-class="calendar.getClassName('checkbox')"
                            ng-true-value="1"
@@ -256,8 +268,11 @@
                        sg-enter="app.renameFolder(calendar)"
                        sg-escape="app.revertEditing(calendar)"/>
               </md-input-container>
-              <md-menu class="md-secondary" label:aria-label="Options"
-                       md-colors="::{color: 'accent-400'}">
+              <md-button class="md-secondary md-icon-button" md-no-ink="md-no-ink"
+                         as-sortable-item-handle="as-sortable-item-handle">
+                <md-icon md-colors="::{color: 'accent-400'}">drag_handle</md-icon>
+              </md-button>
+              <md-menu class="md-secondary sg-list-sortable-hide" label:aria-label="Options">
                 <md-button class="md-icon-button" label:aria-label="Options"
                            ng-click="$mdOpenMenu()"
                            md-menu-origin="md-menu-origin">
@@ -294,7 +309,7 @@
       <md-toolbar class="sg-toolbar-multiple sg-toolbar-tools--dense">
         <div class="md-toolbar-tools sg-toolbar-tools--dense"
              md-colors="::{backgroundColor: 'background-500'}"
-             ng-show="app.sortableCalendars.disabled">
+             ng-hide="app.sortableMode">
           <md-input-container class="md-flex" md-no-float="md-no-float">
             <md-icon>search</md-icon>
             <input ng-model="app.filter.name" type="search" label:placeholder="Filter"/>
@@ -306,7 +321,7 @@
         </div>
         <div class="md-toolbar-tools sg-toolbar-tools--dense ng-hide" layout-align="center center"
              md-colors="::{backgroundColor: 'accent-600'}"
-             ng-hide="app.sortableCalendars.disabled">
+             ng-show="app.sortableMode">
           <md-button ng-click="app.resetSort()"><var:string label:value="Reset"/></md-button>
           <div class="md-flex"><!-- spacer --></div>
           <md-button ng-click="app.toggleSortableMode()"><var:string label:value="Done"/></md-button>
diff --git a/UI/WebServerResources/Gruntfile.js b/UI/WebServerResources/Gruntfile.js
index 84cf59c77..3ef7d9a6d 100644
--- a/UI/WebServerResources/Gruntfile.js
+++ b/UI/WebServerResources/Gruntfile.js
@@ -17,7 +17,6 @@ module.exports = function(grunt) {
 
   };
   var custom_vendor_files = {
-    'js/vendor/ng-sortable.min.js': ['bower_components/Sortable/Sortable.js', 'bower_components/Sortable/ng-sortable.js'],
     'js/vendor/angular-file-upload.min.js': ['bower_components/angular-file-upload/dist/angular-file-upload.js', 'js/Common/angular-file-upload.trump.js'],
     'js/vendor/FileSaver.min.js': ['bower_components/file-saver.js/FileSaver.js']
   };
@@ -134,6 +133,7 @@ module.exports = function(grunt) {
       '<%= src %>/angular-material/angular-material{,.min}.js{,.map}',
       '<%= src %>/angular-ui-router/release/angular-ui-router{,.min}.js',
       //'<%= src %>/ng-file-upload/ng-file-upload{,.min}.js{,map}',
+      '<%= src %>/ng-sortable/dist/ng-sortable.min.js{,map}',
       '<%= src %>/lodash/dist/lodash{,.min}.js'
     ];
     for (var j = 0; j < js.length; j++) {
diff --git a/UI/WebServerResources/bower.json b/UI/WebServerResources/bower.json
index 954fc3913..53b0368b3 100644
--- a/UI/WebServerResources/bower.json
+++ b/UI/WebServerResources/bower.json
@@ -13,7 +13,7 @@
     "angular-material": "1.1.0-rc.5-master-7f01138",
     "file-saver.js": "latest",
     "lodash": "latest",
-    "Sortable": "latest",
+    "ng-sortable": "latest",
     "breakpoint-sass": ">=2.4.2"
   }
 }
diff --git a/UI/WebServerResources/js/Preferences/Preferences.app.js b/UI/WebServerResources/js/Preferences/Preferences.app.js
index cf8b8e6fc..538c6f25d 100644
--- a/UI/WebServerResources/js/Preferences/Preferences.app.js
+++ b/UI/WebServerResources/js/Preferences/Preferences.app.js
@@ -4,7 +4,7 @@
 (function() {
   'use strict';
 
-  angular.module('SOGo.PreferencesUI', ['ui.router', 'ck', 'SOGo.Common', 'SOGo.MailerUI', 'SOGo.ContactsUI', 'SOGo.Authentication', 'ng-sortable'])
+  angular.module('SOGo.PreferencesUI', ['ui.router', 'ck', 'SOGo.Common', 'SOGo.MailerUI', 'SOGo.ContactsUI', 'SOGo.Authentication', 'as.sortable'])
     .config(configure)
     .run(runBlock);
 
diff --git a/UI/WebServerResources/js/Scheduler/CalendarsController.js b/UI/WebServerResources/js/Scheduler/CalendarsController.js
index 7383c96be..15fbecf65 100644
--- a/UI/WebServerResources/js/Scheduler/CalendarsController.js
+++ b/UI/WebServerResources/js/Scheduler/CalendarsController.js
@@ -28,20 +28,15 @@
     // vm.today = today;
 
     vm.filter = { name: '' };
+    vm.sortableMode = false;
     vm.toggleSortableMode = toggleSortableMode;
     vm.resetSort = resetSort;
     vm.sortableCalendars = {
-      disabled: true,
-      animation: 150,
-      draggable: 'md-list-item',
-      handle: '.md-menu',
-      ghostClass: 'sg-sortable-ghost',
-      chosenClass: 'sg-sortable-chosen',
-      setData: sortable_setData,
-      onEnd: sortable_onEnd
+      scrollableContainer: '#sidenav-content',
+      containment: 'md-list',
+      orderChanged: _sortableEnd,
+      accept: _sortableAccept
     };
-    vm.sortableSubscriptions = angular.copy(vm.sortableCalendars);
-    vm.sortableWebCalendars = angular.copy(vm.sortableCalendars);
 
     Preferences.ready().then(function() {
       vm.categories = _.map(Preferences.defaults.SOGoCalendarCategories, function(name) {
@@ -88,18 +83,19 @@
       true // compare for object equality
     );
 
-    function sortable_setData(dataTransfer, dragEl) {
-      dataTransfer.clearData();
+    /**
+     * Only allow to sort items within the same list.
+     */
+    function _sortableAccept(sourceItemHandleScope, destSortableScope, destItemScope) {
+      return sourceItemHandleScope.sortableScope.element[0] == destSortableScope.element[0];
     }
 
-    function sortable_onEnd() {
+    function _sortableEnd() {
       Calendar.saveFoldersOrder(_.flatMap(Calendar.$findAll(), 'id'));
     }
 
     function toggleSortableMode() {
-      vm.sortableCalendars.disabled = !vm.sortableCalendars.disabled;
-      vm.sortableSubscriptions.disabled = !vm.sortableSubscriptions.disabled;
-      vm.sortableWebCalendars.disabled = !vm.sortableWebCalendars.disabled;
+      vm.sortableMode = !vm.sortableMode;
       vm.filter.name = '';
     }
 
diff --git a/UI/WebServerResources/js/Scheduler/Scheduler.app.js b/UI/WebServerResources/js/Scheduler/Scheduler.app.js
index c916a1d5b..f6606bdbd 100644
--- a/UI/WebServerResources/js/Scheduler/Scheduler.app.js
+++ b/UI/WebServerResources/js/Scheduler/Scheduler.app.js
@@ -4,7 +4,7 @@
 (function() {
   'use strict';
 
-  angular.module('SOGo.SchedulerUI', ['ngCookies', 'ui.router', 'angularFileUpload', 'ck', 'SOGo.Common', 'SOGo.PreferencesUI', 'SOGo.ContactsUI', 'SOGo.MailerUI', 'ng-sortable'])
+  angular.module('SOGo.SchedulerUI', ['ngCookies', 'ui.router', 'angularFileUpload', 'ck', 'SOGo.Common', 'SOGo.PreferencesUI', 'SOGo.ContactsUI', 'SOGo.MailerUI', 'as.sortable'])
     .config(configure)
     .run(runBlock);
 
diff --git a/UI/WebServerResources/js/vendor/ng-sortable.min.js b/UI/WebServerResources/js/vendor/ng-sortable.min.js
index f41d577b3..7adc8af1c 100644
--- a/UI/WebServerResources/js/vendor/ng-sortable.min.js
+++ b/UI/WebServerResources/js/vendor/ng-sortable.min.js
@@ -1,2 +1 @@
-!function(a){"use strict";"function"==typeof define&&define.amd?define(a):"undefined"!=typeof module&&"undefined"!=typeof module.exports?module.exports=a():"undefined"!=typeof Package?Sortable=a():window.Sortable=a()}(function(){"use strict";function a(a,b){if(!a||!a.nodeType||1!==a.nodeType)throw"Sortable: `el` must be HTMLElement, and not "+{}.toString.call(a);this.el=a,this.options=b=r({},b),a[L]=this;var c={group:Math.random(),sort:!0,disabled:!1,store:null,handle:null,scroll:!0,scrollSensitivity:30,scrollSpeed:10,draggable:/[uo]l/i.test(a.nodeName)?"li":">*",ghostClass:"sortable-ghost",chosenClass:"sortable-chosen",ignore:"a, img",filter:null,animation:0,setData:function(a,b){a.setData("Text",b.textContent)},dropBubble:!1,dragoverBubble:!1,dataIdAttr:"data-id",delay:0,forceFallback:!1,fallbackClass:"sortable-fallback",fallbackOnBody:!1};for(var d in c)!(d in b)&&(b[d]=c[d]);V(b);for(var f in this)"_"===f.charAt(0)&&(this[f]=this[f].bind(this));this.nativeDraggable=b.forceFallback?!1:P,e(a,"mousedown",this._onTapStart),e(a,"touchstart",this._onTapStart),this.nativeDraggable&&(e(a,"dragover",this),e(a,"dragenter",this)),T.push(this._onDragOver),b.store&&this.sort(b.store.get(this))}function b(a){v&&v.state!==a&&(h(v,"display",a?"none":""),!a&&v.state&&w.insertBefore(v,s),v.state=a)}function c(a,b,c){if(a){c=c||N,b=b.split(".");var d=b.shift().toUpperCase(),e=new RegExp("\\s("+b.join("|")+")(?=\\s)","g");do if(">*"===d&&a.parentNode===c||(""===d||a.nodeName.toUpperCase()==d)&&(!b.length||((" "+a.className+" ").match(e)||[]).length==b.length))return a;while(a!==c&&(a=a.parentNode))}return null}function d(a){a.dataTransfer&&(a.dataTransfer.dropEffect="move"),a.preventDefault()}function e(a,b,c){a.addEventListener(b,c,!1)}function f(a,b,c){a.removeEventListener(b,c,!1)}function g(a,b,c){if(a)if(a.classList)a.classList[c?"add":"remove"](b);else{var d=(" "+a.className+" ").replace(K," ").replace(" "+b+" "," ");a.className=(d+(c?" 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scrollableContainer||(scrollableContainer=$document[0].documentElement),{width:boundingClientRect.width||element.prop("offsetWidth"),height:boundingClientRect.height||element.prop("offsetHeight"),top:boundingClientRect.top+($window.pageYOffset||scrollableContainer.scrollTop-scrollableContainer.offsetTop),left:boundingClientRect.left+($window.pageXOffset||scrollableContainer.scrollLeft-scrollableContainer.offsetLeft)}},eventObj:function(event){var obj=event;return void 0!==event.targetTouches?obj=event.targetTouches.item(0):void 0!==event.originalEvent&&void 0!==event.originalEvent.targetTouches&&(obj=event.originalEvent.targetTouches.item(0)),obj},isTouchInvalid:function(event){var touchInvalid=!1;return void 0!==event.touches&&event.touches.length>1?touchInvalid=!0:void 0!==event.originalEvent&&void 0!==event.originalEvent.touches&&event.originalEvent.touches.length>1&&(touchInvalid=!0),touchInvalid},positionStarted:function(event,target,scrollableContainer){var pos={};return 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newAx=Math.abs(pos.distX)>Math.abs(pos.distY)?1:0;pos.dirAx!==newAx?(pos.distAxX=0,pos.distAxY=0):(pos.distAxX+=Math.abs(pos.distX),0!==pos.dirX&&pos.dirX!==pos.lastDirX&&(pos.distAxX=0),pos.distAxY+=Math.abs(pos.distY),0!==pos.dirY&&pos.dirY!==pos.lastDirY&&(pos.distAxY=0)),pos.dirAx=newAx},movePosition:function(event,element,pos,container,containerPositioning,scrollableContainer){var bounds,useRelative="relative"===containerPositioning;element.x=event.pageX-pos.offsetX,element.y=event.pageY-pos.offsetY,container&&(bounds=this.offset(container,scrollableContainer),useRelative&&(element.x-=bounds.left,element.y-=bounds.top,bounds.left=0,bounds.top=0),element.x<bounds.left?element.x=bounds.left:element.x>=bounds.width+bounds.left-this.offset(element).width&&(element.x=bounds.width+bounds.left-this.offset(element).width),element.y<bounds.top?element.y=bounds.top:element.y>=bounds.height+bounds.top-this.offset(element).height&&(element.y=bounds.height+bounds.top-this.offset(element).height)),element.css({left:element.x+"px",top:element.y+"px"}),this.calculatePosition(pos,event)},dragItem:function(item){return{index:item.index(),parent:item.sortableScope,source:item,targetElement:null,targetElementOffset:null,sourceInfo:{index:item.index(),itemScope:item.itemScope,sortableScope:item.sortableScope},canMove:function(itemPosition,targetElement,targetElementOffset){return this.targetElement!==targetElement?(this.targetElement=targetElement,this.targetElementOffset=targetElementOffset,!0):itemPosition.dirX*(targetElementOffset.left-this.targetElementOffset.left)>0||itemPosition.dirY*(targetElementOffset.top-this.targetElementOffset.top)>0?(this.targetElementOffset=targetElementOffset,!0):!1},moveTo:function(parent,index){this.parent=parent,this.isSameParent()&&this.source.index()<index&&!this.sourceInfo.sortableScope.cloning&&(index-=1),this.index=index},isSameParent:function(){return this.parent.element===this.sourceInfo.sortableScope.element},isOrderChanged:function(){return this.index!==this.sourceInfo.index},eventArgs:function(){return{source:this.sourceInfo,dest:{index:this.index,sortableScope:this.parent}}},apply:function(){this.sourceInfo.sortableScope.cloning?this.parent.options.clone||this.parent.insertItem(this.index,angular.copy(this.source.modelValue)):(this.sourceInfo.sortableScope.removeItem(this.sourceInfo.index),(this.parent.options.allowDuplicates||this.parent.modelValue.indexOf(this.source.modelValue)<0)&&this.parent.insertItem(this.index,this.source.modelValue))}}},noDrag:function(element){return void 0!==element.attr("no-drag")||void 0!==element.attr("data-no-drag")},findAncestor:function(el,selector){el=el[0];for(var matches=Element.matches||Element.prototype.mozMatchesSelector||Element.prototype.msMatchesSelector||Element.prototype.oMatchesSelector||Element.prototype.webkitMatchesSelector;(el=el.parentElement)&&!matches.call(el,selector););return el?angular.element(el):angular.element(document.body)}}}])}(),function(){"use strict";var mainModule=angular.module("as.sortable");mainModule.controller("as.sortable.sortableController",["$scope",function($scope){this.scope=$scope,$scope.modelValue=null,$scope.callbacks=null,$scope.type="sortable",$scope.options={longTouch:!1},$scope.isDisabled=!1,$scope.insertItem=function(index,itemData){$scope.options.allowDuplicates?$scope.modelValue.splice(index,0,angular.copy(itemData)):$scope.modelValue.splice(index,0,itemData)},$scope.removeItem=function(index){var removedItem=null;return index>-1&&(removedItem=$scope.modelValue.splice(index,1)[0]),removedItem},$scope.isEmpty=function(){return $scope.modelValue&&0===$scope.modelValue.length},$scope.accept=function(sourceItemHandleScope,destScope,destItemScope){return $scope.callbacks.accept(sourceItemHandleScope,destScope,destItemScope)}}]),mainModule.directive("asSortable",function(){return{require:"ngModel",restrict:"A",scope:!0,controller:"as.sortable.sortableController",link:function(scope,element,attrs,ngModelController){var ngModel,callbacks;ngModel=ngModelController,ngModel&&(ngModel.$render=function(){scope.modelValue=ngModel.$modelValue},scope.element=element,element.data("_scope",scope),callbacks={accept:null,orderChanged:null,itemMoved:null,dragStart:null,dragMove:null,dragCancel:null,dragEnd:null},callbacks.accept=function(sourceItemHandleScope,destSortableScope,destItemScope){return!0},callbacks.orderChanged=function(event){},callbacks.itemMoved=function(event){},callbacks.dragStart=function(event){},callbacks.dragMove=angular.noop,callbacks.dragCancel=function(event){},callbacks.dragEnd=function(event){},scope.$watch(attrs.asSortable,function(newVal,oldVal){angular.forEach(newVal,function(value,key){callbacks[key]?"function"==typeof value&&(callbacks[key]=value):scope.options[key]=value}),scope.callbacks=callbacks},!0),angular.isDefined(attrs.isDisabled)&&scope.$watch(attrs.isDisabled,function(newVal,oldVal){angular.isUndefined(newVal)||(scope.isDisabled=newVal)},!0))}}})}(),function(){"use strict";function isParent(possibleParent,elem){return elem&&"HTML"!==elem.nodeName?elem.parentNode===possibleParent?!0:isParent(possibleParent,elem.parentNode):!1}var mainModule=angular.module("as.sortable");mainModule.controller("as.sortable.sortableItemHandleController",["$scope",function($scope){this.scope=$scope,$scope.itemScope=null,$scope.type="handle"}]),mainModule.directive("asSortableItemHandle",["sortableConfig","$helper","$window","$document","$timeout",function(sortableConfig,$helper,$window,$document,$timeout){return{require:"^asSortableItem",scope:!0,restrict:"A",controller:"as.sortable.sortableItemHandleController",link:function(scope,element,attrs,itemController){function insertBefore(targetElement,targetScope){"table-row"!==placeHolder.css("display")&&placeHolder.css("display","block"),targetScope.sortableScope.options.clone||(targetElement[0].parentNode.insertBefore(placeHolder[0],targetElement[0]),dragItemInfo.moveTo(targetScope.sortableScope,targetScope.index()))}function insertAfter(targetElement,targetScope){"table-row"!==placeHolder.css("display")&&placeHolder.css("display","block"),targetScope.sortableScope.options.clone||(targetElement.after(placeHolder),dragItemInfo.moveTo(targetScope.sortableScope,targetScope.index()+1))}function fetchScope(element){for(var scope;!scope&&element.length;)scope=element.data("_scope"),scope||(element=element.parent());return scope}function rollbackDragChanges(){scope.itemScope.sortableScope.cloning||placeElement.replaceWith(scope.itemScope.element),placeHolder.remove(),dragElement.remove(),dragElement=null,dragHandled=!1,containment.css("cursor",""),containment.removeClass("as-sortable-un-selectable")}var dragElement,placeHolder,placeElement,itemPosition,dragItemInfo,containment,containerPositioning,dragListen,scrollableContainer,dragStart,dragMove,dragEnd,dragCancel,isDraggable,placeHolderIndex,bindDrag,unbindDrag,bindEvents,unBindEvents,hasTouch,isIOS,longTouchStart,longTouchCancel,longTouchTimer,dragHandled,createPlaceholder,isPlaceHolderPresent,escapeListen,isDisabled=!1,isLongTouch=!1;hasTouch="ontouchstart"in $window,isIOS=/iPad|iPhone|iPod/.test($window.navigator.userAgent)&&!$window.MSStream,sortableConfig.handleClass&&element.addClass(sortableConfig.handleClass),scope.itemScope=itemController.scope,element.data("_scope",scope),scope.$watchGroup(["sortableScope.isDisabled","sortableScope.options.longTouch"],function(newValues){isDisabled!==newValues[0]?(isDisabled=newValues[0],isDisabled?unbindDrag():bindDrag()):isLongTouch!==newValues[1]?(isLongTouch=newValues[1],unbindDrag(),bindDrag()):bindDrag()}),scope.$on("$destroy",function(){angular.element($document[0].body).unbind("keydown",escapeListen)}),createPlaceholder=function(itemScope){return"function"==typeof scope.sortableScope.options.placeholder?angular.element(scope.sortableScope.options.placeholder(itemScope)):"string"==typeof scope.sortableScope.options.placeholder?angular.element(scope.sortableScope.options.placeholder):angular.element($document[0].createElement(itemScope.element.prop("tagName")))},dragListen=function(event){var startPosition,unbindMoveListen=function(){angular.element($document).unbind("mousemove",moveListen),angular.element($document).unbind("touchmove",moveListen),element.unbind("mouseup",unbindMoveListen),element.unbind("touchend",unbindMoveListen),element.unbind("touchcancel",unbindMoveListen)},moveListen=function(e){e.preventDefault();var eventObj=$helper.eventObj(e);startPosition||(startPosition={clientX:eventObj.clientX,clientY:eventObj.clientY}),Math.abs(eventObj.clientX-startPosition.clientX)+Math.abs(eventObj.clientY-startPosition.clientY)>10&&(unbindMoveListen(),dragStart(event))};angular.element($document).bind("mousemove",moveListen),angular.element($document).bind("touchmove",moveListen),element.bind("mouseup",unbindMoveListen),element.bind("touchend",unbindMoveListen),element.bind("touchcancel",unbindMoveListen),event.stopPropagation()},dragStart=function(event){var eventObj,tagName;(hasTouch||2!==event.button&&3!==event.which)&&(hasTouch&&$helper.isTouchInvalid(event)||!dragHandled&&isDraggable(event)&&(dragHandled=!0,event.preventDefault(),eventObj=$helper.eventObj(event),scope.sortableScope=scope.sortableScope||scope.itemScope.sortableScope,scope.callbacks=scope.callbacks||scope.itemScope.callbacks,scope.itemScope.sortableScope.options.clone||scope.itemScope.sortableScope.options.ctrlClone&&event.ctrlKey?scope.itemScope.sortableScope.cloning=!0:scope.itemScope.sortableScope.cloning=!1,scrollableContainer=angular.element($document[0].querySelector(scope.sortableScope.options.scrollableContainer)).length>0?$document[0].querySelector(scope.sortableScope.options.scrollableContainer):$document[0].documentElement,containment=scope.sortableScope.options.containment?$helper.findAncestor(element,scope.sortableScope.options.containment):angular.element($document[0].body),containment.css("cursor","move"),containment.css("cursor","-webkit-grabbing"),containment.css("cursor","-moz-grabbing"),containment.addClass("as-sortable-un-selectable"),containerPositioning=scope.sortableScope.options.containerPositioning||"absolute",dragItemInfo=$helper.dragItem(scope),tagName=scope.itemScope.element.prop("tagName"),dragElement=angular.element($document[0].createElement(scope.sortableScope.element.prop("tagName"))).addClass(scope.sortableScope.element.attr("class")).addClass(sortableConfig.dragClass),dragElement.css("width",$helper.width(scope.itemScope.element)+"px"),dragElement.css("height",$helper.height(scope.itemScope.element)+"px"),placeHolder=createPlaceholder(scope.itemScope).addClass(sortableConfig.placeHolderClass).addClass(scope.sortableScope.options.additionalPlaceholderClass),placeHolder.css("width",$helper.width(scope.itemScope.element)+"px"),placeHolder.css("height",$helper.height(scope.itemScope.element)+"px"),placeElement=angular.element($document[0].createElement(tagName)),sortableConfig.hiddenClass&&placeElement.addClass(sortableConfig.hiddenClass),itemPosition=$helper.positionStarted(eventObj,scope.itemScope.element,scrollableContainer),scope.itemScope.sortableScope.options.clone||scope.itemScope.element.after(placeHolder),scope.itemScope.sortableScope.cloning?dragElement.append(scope.itemScope.element.clone()):(scope.itemScope.element.after(placeElement),dragElement.append(scope.itemScope.element)),containment.append(dragElement),$helper.movePosition(eventObj,dragElement,itemPosition,containment,containerPositioning,scrollableContainer),scope.sortableScope.$apply(function(){scope.callbacks.dragStart(dragItemInfo.eventArgs())}),bindEvents()))},isDraggable=function(event){var elementClicked,sourceScope,isDraggable;for(elementClicked=angular.element(event.target),sourceScope=fetchScope(elementClicked),isDraggable=sourceScope&&"handle"===sourceScope.type;isDraggable&&elementClicked[0]!==element[0];)$helper.noDrag(elementClicked)&&(isDraggable=!1),elementClicked=elementClicked.parent();return isDraggable},dragMove=function(event){var eventObj,targetX,targetY,targetScope,targetElement;if((!hasTouch||!$helper.isTouchInvalid(event))&&dragHandled&&dragElement){if(event.preventDefault(),eventObj=$helper.eventObj(event),scope.callbacks.dragMove!==angular.noop&&scope.sortableScope.$apply(function(){scope.callbacks.dragMove(itemPosition,containment,eventObj)}),targetX=eventObj.pageX-$document[0].documentElement.scrollLeft,targetY=eventObj.pageY-($window.pageYOffset||$document[0].documentElement.scrollTop),dragElement.addClass(sortableConfig.hiddenClass),targetElement=angular.element($document[0].elementFromPoint(targetX,targetY)),dragElement.removeClass(sortableConfig.hiddenClass),$helper.movePosition(eventObj,dragElement,itemPosition,containment,containerPositioning,scrollableContainer),dragElement.addClass(sortableConfig.dragging),targetScope=fetchScope(targetElement),!targetScope||!targetScope.type)return;if("handle"===targetScope.type&&(targetScope=targetScope.itemScope),"item"!==targetScope.type&&"sortable"!==targetScope.type)return;if("item"===targetScope.type&&targetScope.accept(scope,targetScope.sortableScope,targetScope)){targetElement=targetScope.element;var targetElementOffset=$helper.offset(targetElement,scrollableContainer);if(!dragItemInfo.canMove(itemPosition,targetElement,targetElementOffset))return;var placeholderIndex=placeHolderIndex(targetScope.sortableScope.element);0>placeholderIndex?insertBefore(targetElement,targetScope):placeholderIndex<=targetScope.index()?insertAfter(targetElement,targetScope):insertBefore(targetElement,targetScope)}"sortable"===targetScope.type&&targetScope.accept(scope,targetScope)&&!isParent(targetScope.element[0],targetElement[0])&&(isPlaceHolderPresent(targetElement)||targetScope.options.clone||(targetElement[0].appendChild(placeHolder[0]),dragItemInfo.moveTo(targetScope,targetScope.modelValue.length)))}},placeHolderIndex=function(targetElement){var itemElements,i;if(targetElement.hasClass(sortableConfig.placeHolderClass))return 0;for(itemElements=targetElement.children(),i=0;i<itemElements.length;i+=1)if(angular.element(itemElements[i]).hasClass(sortableConfig.placeHolderClass))return i;return-1},isPlaceHolderPresent=function(targetElement){return placeHolderIndex(targetElement)>=0},dragEnd=function(event){dragHandled&&(event.preventDefault(),dragElement&&(rollbackDragChanges(),dragItemInfo.apply(),scope.sortableScope.$apply(function(){dragItemInfo.isSameParent()?dragItemInfo.isOrderChanged()&&scope.callbacks.orderChanged(dragItemInfo.eventArgs()):scope.callbacks.itemMoved(dragItemInfo.eventArgs())}),scope.sortableScope.$apply(function(){scope.callbacks.dragEnd(dragItemInfo.eventArgs())}),dragItemInfo=null),unBindEvents())},dragCancel=function(event){dragHandled&&(event.preventDefault(),dragElement&&(rollbackDragChanges(),scope.sortableScope.$apply(function(){scope.callbacks.dragCancel(dragItemInfo.eventArgs())}),dragItemInfo=null),unBindEvents())},bindDrag=function(){hasTouch&&(isLongTouch?isIOS?(element.bind("touchstart",longTouchStart),element.bind("touchend",longTouchCancel),element.bind("touchmove",longTouchCancel)):element.bind("contextmenu",dragListen):element.bind("touchstart",dragListen)),element.bind("mousedown",dragListen)},unbindDrag=function(){element.unbind("touchstart",longTouchStart),element.unbind("touchend",longTouchCancel),element.unbind("touchmove",longTouchCancel),element.unbind("contextmenu",dragListen),element.unbind("touchstart",dragListen),element.unbind("mousedown",dragListen)},longTouchStart=function(event){longTouchTimer=$timeout(function(){dragListen(event)},500)},longTouchCancel=function(){$timeout.cancel(longTouchTimer)},escapeListen=function(event){27===event.keyCode&&dragCancel(event)},angular.element($document[0].body).bind("keydown",escapeListen),bindEvents=function(){angular.element($document).bind("touchmove",dragMove),angular.element($document).bind("touchend",dragEnd),angular.element($document).bind("touchcancel",dragCancel),angular.element($document).bind("mousemove",dragMove),angular.element($document).bind("mouseup",dragEnd)},unBindEvents=function(){angular.element($document).unbind("touchend",dragEnd),angular.element($document).unbind("touchcancel",dragCancel),angular.element($document).unbind("touchmove",dragMove),angular.element($document).unbind("mouseup",dragEnd),angular.element($document).unbind("mousemove",dragMove)}}}}])}(),function(){"use strict";var mainModule=angular.module("as.sortable");mainModule.controller("as.sortable.sortableItemController",["$scope",function($scope){this.scope=$scope,$scope.sortableScope=null,$scope.modelValue=null,$scope.type="item",$scope.index=function(){return $scope.$index},$scope.itemData=function(){return $scope.sortableScope.modelValue[$scope.$index]}}]),mainModule.directive("asSortableItem",["sortableConfig",function(sortableConfig){return{require:["^asSortable","?ngModel"],restrict:"A",controller:"as.sortable.sortableItemController",link:function(scope,element,attrs,ctrl){var sortableController=ctrl[0],ngModelController=ctrl[1];sortableConfig.itemClass&&element.addClass(sortableConfig.itemClass),scope.sortableScope=sortableController.scope,ngModelController?ngModelController.$render=function(){scope.modelValue=ngModelController.$modelValue}:scope.modelValue=sortableController.scope.modelValue[scope.$index],scope.element=element,element.data("_scope",scope)}}}])}();
\ No newline at end of file
diff --git a/UI/WebServerResources/js/vendor/ng-sortable.min.js.map b/UI/WebServerResources/js/vendor/ng-sortable.min.js.map
index 797ae34fe..12aa1a4dd 100644
--- a/UI/WebServerResources/js/vendor/ng-sortable.min.js.map
+++ b/UI/WebServerResources/js/vendor/ng-sortable.min.js.map
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* Sortable\n * @author\tRubaXa   <trash@rubaxa.org>\n * @license MIT\n */\n\n\n(function (factory) {\n\t\"use strict\";\n\n\tif (typeof define === \"function\" && define.amd) {\n\t\tdefine(factory);\n\t}\n\telse if (typeof module != \"undefined\" && typeof module.exports != \"undefined\") {\n\t\tmodule.exports = factory();\n\t}\n\telse if (typeof Package !== \"undefined\") {\n\t\tSortable = factory();  // export for Meteor.js\n\t}\n\telse {\n\t\t/* jshint sub:true */\n\t\twindow[\"Sortable\"] = factory();\n\t}\n})(function () {\n\t\"use strict\";\n\n\tvar dragEl,\n\t\tparentEl,\n\t\tghostEl,\n\t\tcloneEl,\n\t\trootEl,\n\t\tnextEl,\n\n\t\tscrollEl,\n\t\tscrollParentEl,\n\n\t\tlastEl,\n\t\tlastCSS,\n\t\tlastParentCSS,\n\n\t\toldIndex,\n\t\tnewIndex,\n\n\t\tactiveGroup,\n\t\tautoScroll = {},\n\n\t\ttapEvt,\n\t\ttouchEvt,\n\n\t\tmoved,\n\n\t\t/** @const */\n\t\tRSPACE = /\\s+/g,\n\n\t\texpando = 'Sortable' + (new Date).getTime(),\n\n\t\twin = window,\n\t\tdocument = 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rootEl) {\n\t\t\t\t\tscrollEl = options.scroll;\n\t\t\t\t\tscrollParentEl = rootEl;\n\n\t\t\t\t\tif (scrollEl === true) {\n\t\t\t\t\t\tscrollEl = rootEl;\n\n\t\t\t\t\t\tdo {\n\t\t\t\t\t\t\tif ((scrollEl.offsetWidth < scrollEl.scrollWidth) ||\n\t\t\t\t\t\t\t\t(scrollEl.offsetHeight < scrollEl.scrollHeight)\n\t\t\t\t\t\t\t) {\n\t\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t/* jshint boss:true */\n\t\t\t\t\t\t} while (scrollEl = scrollEl.parentNode);\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\tif (scrollEl) {\n\t\t\t\t\tel = scrollEl;\n\t\t\t\t\trect = scrollEl.getBoundingClientRect();\n\t\t\t\t\tvx = (abs(rect.right - x) <= sens) - (abs(rect.left - x) <= sens);\n\t\t\t\t\tvy = (abs(rect.bottom - y) <= sens) - (abs(rect.top - y) <= sens);\n\t\t\t\t}\n\n\n\t\t\t\tif (!(vx || vy)) {\n\t\t\t\t\tvx = (winWidth - x <= sens) - (x <= sens);\n\t\t\t\t\tvy = (winHeight - y <= sens) - (y <= sens);\n\n\t\t\t\t\t/* jshint expr:true */\n\t\t\t\t\t(vx || vy) && (el = win);\n\t\t\t\t}\n\n\n\t\t\t\tif 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(group.put.join ? ' ' + group.put.join(' ') : '') + ' ';\n\t\t}\n\t;\n\n\n\n\t/**\n\t * @class  Sortable\n\t * @param  {HTMLElement}  el\n\t * @param  {Object}       [options]\n\t */\n\tfunction Sortable(el, options) {\n\t\tif (!(el && el.nodeType && el.nodeType === 1)) {\n\t\t\tthrow 'Sortable: `el` must be HTMLElement, and not ' + {}.toString.call(el);\n\t\t}\n\n\t\tthis.el = el; // root element\n\t\tthis.options = options = _extend({}, options);\n\n\n\t\t// Export instance\n\t\tel[expando] = this;\n\n\n\t\t// Default options\n\t\tvar defaults = {\n\t\t\tgroup: Math.random(),\n\t\t\tsort: true,\n\t\t\tdisabled: false,\n\t\t\tstore: null,\n\t\t\thandle: null,\n\t\t\tscroll: true,\n\t\t\tscrollSensitivity: 30,\n\t\t\tscrollSpeed: 10,\n\t\t\tdraggable: /[uo]l/i.test(el.nodeName) ? 'li' : '>*',\n\t\t\tghostClass: 'sortable-ghost',\n\t\t\tchosenClass: 'sortable-chosen',\n\t\t\tignore: 'a, img',\n\t\t\tfilter: null,\n\t\t\tanimation: 0,\n\t\t\tsetData: function (dataTransfer, dragEl) {\n\t\t\t\tdataTransfer.setData('Text', dragEl.textContent);\n\t\t\t},\n\t\t\tdropBubble: false,\n\t\t\tdragoverBubble: false,\n\t\t\tdataIdAttr: 'data-id',\n\t\t\tdelay: 0,\n\t\t\tforceFallback: false,\n\t\t\tfallbackClass: 'sortable-fallback',\n\t\t\tfallbackOnBody: false\n\t\t};\n\n\n\t\t// Set default options\n\t\tfor (var name in defaults) {\n\t\t\t!(name in options) && (options[name] = defaults[name]);\n\t\t}\n\n\t\t_prepareGroup(options);\n\n\t\t// Bind all private methods\n\t\tfor (var fn in this) {\n\t\t\tif (fn.charAt(0) === '_') {\n\t\t\t\tthis[fn] = this[fn].bind(this);\n\t\t\t}\n\t\t}\n\n\t\t// Setup drag mode\n\t\tthis.nativeDraggable = options.forceFallback ? false : supportDraggable;\n\n\t\t// Bind events\n\t\t_on(el, 'mousedown', this._onTapStart);\n\t\t_on(el, 'touchstart', this._onTapStart);\n\n\t\tif (this.nativeDraggable) {\n\t\t\t_on(el, 'dragover', this);\n\t\t\t_on(el, 'dragenter', this);\n\t\t}\n\n\t\ttouchDragOverListeners.push(this._onDragOver);\n\n\t\t// Restore sorting\n\t\toptions.store && this.sort(options.store.get(this));\n\t}\n\n\n\tSortable.prototype = /** @lends Sortable.prototype */ {\n\t\tconstructor: Sortable,\n\n\t\t_onTapStart: function (/** Event|TouchEvent */evt) {\n\t\t\tvar _this = this,\n\t\t\t\tel = this.el,\n\t\t\t\toptions = this.options,\n\t\t\t\ttype = evt.type,\n\t\t\t\ttouch = evt.touches && evt.touches[0],\n\t\t\t\ttarget = (touch || evt).target,\n\t\t\t\toriginalTarget = target,\n\t\t\t\tfilter = options.filter;\n\n\n\t\t\tif (type === 'mousedown' && evt.button !== 0 || options.disabled) {\n\t\t\t\treturn; // only left button or enabled\n\t\t\t}\n\n\t\t\ttarget = _closest(target, options.draggable, el);\n\n\t\t\tif (!target) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// get the index of the dragged element within its parent\n\t\t\toldIndex = _index(target);\n\n\t\t\t// Check filter\n\t\t\tif (typeof filter === 'function') {\n\t\t\t\tif (filter.call(this, evt, target, this)) {\n\t\t\t\t\t_dispatchEvent(_this, originalTarget, 'filter', target, el, oldIndex);\n\t\t\t\t\tevt.preventDefault();\n\t\t\t\t\treturn; // cancel dnd\n\t\t\t\t}\n\t\t\t}\n\t\t\telse if (filter) {\n\t\t\t\tfilter = filter.split(',').some(function (criteria) {\n\t\t\t\t\tcriteria = _closest(originalTarget, criteria.trim(), el);\n\n\t\t\t\t\tif (criteria) {\n\t\t\t\t\t\t_dispatchEvent(_this, criteria, 'filter', target, el, oldIndex);\n\t\t\t\t\t\treturn true;\n\t\t\t\t\t}\n\t\t\t\t});\n\n\t\t\t\tif (filter) {\n\t\t\t\t\tevt.preventDefault();\n\t\t\t\t\treturn; // cancel dnd\n\t\t\t\t}\n\t\t\t}\n\n\n\t\t\tif (options.handle && !_closest(originalTarget, options.handle, el)) {\n\t\t\t\treturn;\n\t\t\t}\n\n\n\t\t\t// Prepare `dragstart`\n\t\t\tthis._prepareDragStart(evt, touch, target);\n\t\t},\n\n\t\t_prepareDragStart: function (/** Event */evt, /** Touch */touch, /** HTMLElement */target) {\n\t\t\tvar _this = this,\n\t\t\t\tel = _this.el,\n\t\t\t\toptions = _this.options,\n\t\t\t\townerDocument = el.ownerDocument,\n\t\t\t\tdragStartFn;\n\n\t\t\tif (target && !dragEl && (target.parentNode === el)) {\n\t\t\t\ttapEvt = evt;\n\n\t\t\t\trootEl = el;\n\t\t\t\tdragEl = target;\n\t\t\t\tparentEl = dragEl.parentNode;\n\t\t\t\tnextEl = dragEl.nextSibling;\n\t\t\t\tactiveGroup = options.group;\n\n\t\t\t\tdragStartFn = function () {\n\t\t\t\t\t// Delayed drag has been triggered\n\t\t\t\t\t// we can re-enable the events: touchmove/mousemove\n\t\t\t\t\t_this._disableDelayedDrag();\n\n\t\t\t\t\t// Make the element draggable\n\t\t\t\t\tdragEl.draggable = true;\n\n\t\t\t\t\t// Chosen item\n\t\t\t\t\t_toggleClass(dragEl, _this.options.chosenClass, true);\n\n\t\t\t\t\t// Bind the events: dragstart/dragend\n\t\t\t\t\t_this._triggerDragStart(touch);\n\t\t\t\t};\n\n\t\t\t\t// Disable \"draggable\"\n\t\t\t\toptions.ignore.split(',').forEach(function (criteria) {\n\t\t\t\t\t_find(dragEl, criteria.trim(), _disableDraggable);\n\t\t\t\t});\n\n\t\t\t\t_on(ownerDocument, 'mouseup', _this._onDrop);\n\t\t\t\t_on(ownerDocument, 'touchend', _this._onDrop);\n\t\t\t\t_on(ownerDocument, 'touchcancel', _this._onDrop);\n\n\t\t\t\tif (options.delay) {\n\t\t\t\t\t// If the user moves the pointer or let go the click or touch\n\t\t\t\t\t// before the delay has been reached:\n\t\t\t\t\t// disable the delayed drag\n\t\t\t\t\t_on(ownerDocument, 'mouseup', _this._disableDelayedDrag);\n\t\t\t\t\t_on(ownerDocument, 'touchend', _this._disableDelayedDrag);\n\t\t\t\t\t_on(ownerDocument, 'touchcancel', _this._disableDelayedDrag);\n\t\t\t\t\t_on(ownerDocument, 'mousemove', _this._disableDelayedDrag);\n\t\t\t\t\t_on(ownerDocument, 'touchmove', _this._disableDelayedDrag);\n\n\t\t\t\t\t_this._dragStartTimer = setTimeout(dragStartFn, options.delay);\n\t\t\t\t} else {\n\t\t\t\t\tdragStartFn();\n\t\t\t\t}\n\t\t\t}\n\t\t},\n\n\t\t_disableDelayedDrag: function () {\n\t\t\tvar ownerDocument = this.el.ownerDocument;\n\n\t\t\tclearTimeout(this._dragStartTimer);\n\t\t\t_off(ownerDocument, 'mouseup', this._disableDelayedDrag);\n\t\t\t_off(ownerDocument, 'touchend', this._disableDelayedDrag);\n\t\t\t_off(ownerDocument, 'touchcancel', this._disableDelayedDrag);\n\t\t\t_off(ownerDocument, 'mousemove', this._disableDelayedDrag);\n\t\t\t_off(ownerDocument, 'touchmove', this._disableDelayedDrag);\n\t\t},\n\n\t\t_triggerDragStart: function (/** Touch */touch) {\n\t\t\tif (touch) {\n\t\t\t\t// Touch device support\n\t\t\t\ttapEvt = {\n\t\t\t\t\ttarget: dragEl,\n\t\t\t\t\tclientX: touch.clientX,\n\t\t\t\t\tclientY: touch.clientY\n\t\t\t\t};\n\n\t\t\t\tthis._onDragStart(tapEvt, 'touch');\n\t\t\t}\n\t\t\telse if (!this.nativeDraggable) {\n\t\t\t\tthis._onDragStart(tapEvt, true);\n\t\t\t}\n\t\t\telse {\n\t\t\t\t_on(dragEl, 'dragend', this);\n\t\t\t\t_on(rootEl, 'dragstart', this._onDragStart);\n\t\t\t}\n\n\t\t\ttry {\n\t\t\t\tif (document.selection) {\n\t\t\t\t\tdocument.selection.empty();\n\t\t\t\t} else {\n\t\t\t\t\twindow.getSelection().removeAllRanges();\n\t\t\t\t}\n\t\t\t} catch (err) {\n\t\t\t}\n\t\t},\n\n\t\t_dragStarted: function () {\n\t\t\tif (rootEl && dragEl) {\n\t\t\t\t// Apply effect\n\t\t\t\t_toggleClass(dragEl, this.options.ghostClass, true);\n\n\t\t\t\tSortable.active = this;\n\n\t\t\t\t// Drag start event\n\t\t\t\t_dispatchEvent(this, rootEl, 'start', dragEl, rootEl, oldIndex);\n\t\t\t}\n\t\t},\n\n\t\t_emulateDragOver: function () {\n\t\t\tif (touchEvt) {\n\t\t\t\tif (this._lastX === touchEvt.clientX && this._lastY === touchEvt.clientY) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\tthis._lastX = touchEvt.clientX;\n\t\t\t\tthis._lastY = touchEvt.clientY;\n\n\t\t\t\tif (!supportCssPointerEvents) {\n\t\t\t\t\t_css(ghostEl, 'display', 'none');\n\t\t\t\t}\n\n\t\t\t\tvar target = document.elementFromPoint(touchEvt.clientX, touchEvt.clientY),\n\t\t\t\t\tparent = target,\n\t\t\t\t\tgroupName = ' ' + this.options.group.name + '',\n\t\t\t\t\ti = touchDragOverListeners.length;\n\n\t\t\t\tif (parent) {\n\t\t\t\t\tdo {\n\t\t\t\t\t\tif (parent[expando] && parent[expando].options.groups.indexOf(groupName) > -1) {\n\t\t\t\t\t\t\twhile (i--) {\n\t\t\t\t\t\t\t\ttouchDragOverListeners[i]({\n\t\t\t\t\t\t\t\t\tclientX: touchEvt.clientX,\n\t\t\t\t\t\t\t\t\tclientY: touchEvt.clientY,\n\t\t\t\t\t\t\t\t\ttarget: target,\n\t\t\t\t\t\t\t\t\trootEl: parent\n\t\t\t\t\t\t\t\t});\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\ttarget = parent; // store last element\n\t\t\t\t\t}\n\t\t\t\t\t/* jshint boss:true */\n\t\t\t\t\twhile (parent = parent.parentNode);\n\t\t\t\t}\n\n\t\t\t\tif (!supportCssPointerEvents) {\n\t\t\t\t\t_css(ghostEl, 'display', '');\n\t\t\t\t}\n\t\t\t}\n\t\t},\n\n\n\t\t_onTouchMove: function (/**TouchEvent*/evt) {\n\t\t\tif (tapEvt) {\n\t\t\t\t// only set the status to dragging, when we are actually dragging\n\t\t\t\tif (!Sortable.active) {\n\t\t\t\t\tthis._dragStarted();\n\t\t\t\t}\n\n\t\t\t\t// as well as creating the ghost element on the document body\n\t\t\t\tthis._appendGhost();\n\n\t\t\t\tvar touch = evt.touches ? evt.touches[0] : evt,\n\t\t\t\t\tdx = touch.clientX - tapEvt.clientX,\n\t\t\t\t\tdy = touch.clientY - tapEvt.clientY,\n\t\t\t\t\ttranslate3d = evt.touches ? 'translate3d(' + dx + 'px,' + dy + 'px,0)' : 'translate(' + dx + 'px,' + dy + 'px)';\n\n\t\t\t\tmoved = true;\n\t\t\t\ttouchEvt = touch;\n\n\t\t\t\t_css(ghostEl, 'webkitTransform', translate3d);\n\t\t\t\t_css(ghostEl, 'mozTransform', translate3d);\n\t\t\t\t_css(ghostEl, 'msTransform', translate3d);\n\t\t\t\t_css(ghostEl, 'transform', translate3d);\n\n\t\t\t\tevt.preventDefault();\n\t\t\t}\n\t\t},\n\n\t\t_appendGhost: function () {\n\t\t\tif (!ghostEl) {\n\t\t\t\tvar rect = dragEl.getBoundingClientRect(),\n\t\t\t\t\tcss = _css(dragEl),\n\t\t\t\t\toptions = this.options,\n\t\t\t\t\tghostRect;\n\n\t\t\t\tghostEl = dragEl.cloneNode(true);\n\n\t\t\t\t_toggleClass(ghostEl, options.ghostClass, false);\n\t\t\t\t_toggleClass(ghostEl, options.fallbackClass, true);\n\n                          console.debug('rect.top = ' + rect.top);\n                          console.debug('css.marginTop = ' + css.marginTop);\n\t\t\t\t_css(ghostEl, 'top', rect.top - parseInt(css.marginTop, 10));\n\t\t\t\t_css(ghostEl, 'left', rect.left - parseInt(css.marginLeft, 10));\n\t\t\t\t_css(ghostEl, 'width', rect.width);\n\t\t\t\t_css(ghostEl, 'height', rect.height);\n\t\t\t\t_css(ghostEl, 'opacity', '0.8');\n\t\t\t\t_css(ghostEl, 'position', 'fixed');\n\t\t\t\t_css(ghostEl, 'zIndex', '100000');\n\t\t\t\t_css(ghostEl, 'pointerEvents', 'none');\n\n\t\t\t\toptions.fallbackOnBody && document.body.appendChild(ghostEl) || rootEl.appendChild(ghostEl);\n\n\t\t\t\t// Fixing dimensions.\n\t\t\t\tghostRect = ghostEl.getBoundingClientRect();\n\t\t\t\t_css(ghostEl, 'width', rect.width * 2 - ghostRect.width);\n\t\t\t\t_css(ghostEl, 'height', rect.height * 2 - ghostRect.height);\n\t\t\t}\n\t\t},\n\n\t\t_onDragStart: function (/**Event*/evt, /**boolean*/useFallback) {\n\t\t\tvar dataTransfer = evt.dataTransfer,\n\t\t\t\toptions = this.options;\n\n\t\t\tthis._offUpEvents();\n\n\t\t\tif (activeGroup.pull == 'clone') {\n\t\t\t\tcloneEl = dragEl.cloneNode(true);\n\t\t\t\t_css(cloneEl, 'display', 'none');\n\t\t\t\trootEl.insertBefore(cloneEl, dragEl);\n\t\t\t}\n\n\t\t\tif (useFallback) {\n\n\t\t\t\tif (useFallback === 'touch') {\n\t\t\t\t\t// Bind touch events\n\t\t\t\t\t_on(document, 'touchmove', this._onTouchMove);\n\t\t\t\t\t_on(document, 'touchend', this._onDrop);\n\t\t\t\t\t_on(document, 'touchcancel', this._onDrop);\n\t\t\t\t} else {\n\t\t\t\t\t// Old brwoser\n\t\t\t\t\t_on(document, 'mousemove', this._onTouchMove);\n\t\t\t\t\t_on(document, 'mouseup', this._onDrop);\n\t\t\t\t}\n\n\t\t\t\tthis._loopId = setInterval(this._emulateDragOver, 50);\n\t\t\t}\n\t\t\telse {\n\t\t\t\tif (dataTransfer) {\n\t\t\t\t\tdataTransfer.effectAllowed = 'move';\n\t\t\t\t\toptions.setData && options.setData.call(this, dataTransfer, dragEl);\n\t\t\t\t}\n\n\t\t\t\t_on(document, 'drop', this);\n\t\t\t\tsetTimeout(this._dragStarted, 0);\n\t\t\t}\n\t\t},\n\n\t\t_onDragOver: function (/**Event*/evt) {\n\t\t\tvar el = this.el,\n\t\t\t\ttarget,\n\t\t\t\tdragRect,\n\t\t\t\trevert,\n\t\t\t\toptions = this.options,\n\t\t\t\tgroup = options.group,\n\t\t\t\tgroupPut = group.put,\n\t\t\t\tisOwner = (activeGroup === group),\n\t\t\t\tcanSort = options.sort;\n\n\t\t\tif (evt.preventDefault !== void 0) {\n\t\t\t\tevt.preventDefault();\n\t\t\t\t!options.dragoverBubble && evt.stopPropagation();\n\t\t\t}\n\n\t\t\tmoved = true;\n\n\t\t\tif (activeGroup && !options.disabled &&\n\t\t\t\t(isOwner\n\t\t\t\t\t? canSort || (revert = !rootEl.contains(dragEl)) // Reverting item into the original list\n\t\t\t\t\t: activeGroup.pull && groupPut && (\n\t\t\t\t\t\t(activeGroup.name === group.name) || // by Name\n\t\t\t\t\t\t(groupPut.indexOf && ~groupPut.indexOf(activeGroup.name)) // by Array\n\t\t\t\t\t)\n\t\t\t\t) &&\n\t\t\t\t(evt.rootEl === void 0 || evt.rootEl === this.el) // touch fallback\n\t\t\t) {\n\t\t\t\t// Smart auto-scrolling\n\t\t\t\t_autoScroll(evt, options, this.el);\n\n\t\t\t\tif (_silent) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\ttarget = _closest(evt.target, options.draggable, el);\n\t\t\t\tdragRect = dragEl.getBoundingClientRect();\n\n\t\t\t\tif (revert) {\n\t\t\t\t\t_cloneHide(true);\n\n\t\t\t\t\tif (cloneEl || nextEl) {\n\t\t\t\t\t\trootEl.insertBefore(dragEl, cloneEl || nextEl);\n\t\t\t\t\t}\n\t\t\t\t\telse if (!canSort) {\n\t\t\t\t\t\trootEl.appendChild(dragEl);\n\t\t\t\t\t}\n\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\n\t\t\t\tif ((el.children.length === 0) || (el.children[0] === ghostEl) ||\n\t\t\t\t\t(el === evt.target) && (target = _ghostIsLast(el, evt))\n\t\t\t\t) {\n\n\t\t\t\t\tif (target) {\n\t\t\t\t\t\tif (target.animated) {\n\t\t\t\t\t\t\treturn;\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\ttargetRect = target.getBoundingClientRect();\n\t\t\t\t\t}\n\n\t\t\t\t\t_cloneHide(isOwner);\n\n\t\t\t\t\tif (_onMove(rootEl, el, dragEl, dragRect, target, targetRect) !== false) {\n\t\t\t\t\t\tif (!dragEl.contains(el)) {\n\t\t\t\t\t\t\tel.appendChild(dragEl);\n\t\t\t\t\t\t\tparentEl = el; // actualization\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tthis._animate(dragRect, dragEl);\n\t\t\t\t\t\ttarget && this._animate(targetRect, target);\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\telse if (target && !target.animated && target !== dragEl && (target.parentNode[expando] !== void 0)) {\n\t\t\t\t\tif (lastEl !== target) {\n\t\t\t\t\t\tlastEl = target;\n\t\t\t\t\t\tlastCSS = _css(target);\n\t\t\t\t\t\tlastParentCSS = _css(target.parentNode);\n\t\t\t\t\t}\n\n\n\t\t\t\t\tvar targetRect = target.getBoundingClientRect(),\n\t\t\t\t\t\twidth = targetRect.right - targetRect.left,\n\t\t\t\t\t\theight = targetRect.bottom - targetRect.top,\n\t\t\t\t\t\tfloating = /left|right|inline/.test(lastCSS.cssFloat + lastCSS.display)\n\t\t\t\t\t\t\t|| (lastParentCSS.display == 'flex' && lastParentCSS['flex-direction'].indexOf('row') === 0),\n\t\t\t\t\t\tisWide = (target.offsetWidth > dragEl.offsetWidth),\n\t\t\t\t\t\tisLong = (target.offsetHeight > dragEl.offsetHeight),\n\t\t\t\t\t\thalfway = (floating ? (evt.clientX - targetRect.left) / width : (evt.clientY - targetRect.top) / height) > 0.5,\n\t\t\t\t\t\tnextSibling = target.nextElementSibling,\n\t\t\t\t\t\tmoveVector = _onMove(rootEl, el, dragEl, dragRect, target, targetRect),\n\t\t\t\t\t\tafter\n\t\t\t\t\t;\n\n\t\t\t\t\tif (moveVector !== false) {\n\t\t\t\t\t\t_silent = true;\n\t\t\t\t\t\tsetTimeout(_unsilent, 30);\n\n\t\t\t\t\t\t_cloneHide(isOwner);\n\n\t\t\t\t\t\tif (moveVector === 1 || moveVector === -1) {\n\t\t\t\t\t\t\tafter = (moveVector === 1);\n\t\t\t\t\t\t}\n\t\t\t\t\t\telse if (floating) {\n\t\t\t\t\t\t\tvar elTop = dragEl.offsetTop,\n\t\t\t\t\t\t\t\ttgTop = target.offsetTop;\n\n\t\t\t\t\t\t\tif (elTop === tgTop) {\n\t\t\t\t\t\t\t\tafter = (target.previousElementSibling === dragEl) && !isWide || halfway && isWide;\n\t\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t\tafter = tgTop > elTop;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\tafter = (nextSibling !== dragEl) && !isLong || halfway && isLong;\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tif (!dragEl.contains(el)) {\n\t\t\t\t\t\t\tif (after && !nextSibling) {\n\t\t\t\t\t\t\t\tel.appendChild(dragEl);\n\t\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t\ttarget.parentNode.insertBefore(dragEl, after ? nextSibling : target);\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tparentEl = dragEl.parentNode; // actualization\n\n\t\t\t\t\t\tthis._animate(dragRect, dragEl);\n\t\t\t\t\t\tthis._animate(targetRect, target);\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t},\n\n\t\t_animate: function (prevRect, target) {\n\t\t\tvar ms = this.options.animation;\n\n\t\t\tif (ms) {\n\t\t\t\tvar currentRect = target.getBoundingClientRect();\n\n\t\t\t\t_css(target, 'transition', 'none');\n\t\t\t\t_css(target, 'transform', 'translate3d('\n\t\t\t\t\t+ (prevRect.left - currentRect.left) + 'px,'\n\t\t\t\t\t+ (prevRect.top - currentRect.top) + 'px,0)'\n\t\t\t\t);\n\n\t\t\t\ttarget.offsetWidth; // repaint\n\n\t\t\t\t_css(target, 'transition', 'all ' + ms + 'ms');\n\t\t\t\t_css(target, 'transform', 'translate3d(0,0,0)');\n\n\t\t\t\tclearTimeout(target.animated);\n\t\t\t\ttarget.animated = setTimeout(function () {\n\t\t\t\t\t_css(target, 'transition', '');\n\t\t\t\t\t_css(target, 'transform', '');\n\t\t\t\t\ttarget.animated = false;\n\t\t\t\t}, ms);\n\t\t\t}\n\t\t},\n\n\t\t_offUpEvents: function () {\n\t\t\tvar ownerDocument = this.el.ownerDocument;\n\n\t\t\t_off(document, 'touchmove', this._onTouchMove);\n\t\t\t_off(ownerDocument, 'mouseup', this._onDrop);\n\t\t\t_off(ownerDocument, 'touchend', this._onDrop);\n\t\t\t_off(ownerDocument, 'touchcancel', this._onDrop);\n\t\t},\n\n\t\t_onDrop: function (/**Event*/evt) {\n\t\t\tvar el = this.el,\n\t\t\t\toptions = this.options;\n\n\t\t\tclearInterval(this._loopId);\n\t\t\tclearInterval(autoScroll.pid);\n\t\t\tclearTimeout(this._dragStartTimer);\n\n\t\t\t// Unbind events\n\t\t\t_off(document, 'mousemove', this._onTouchMove);\n\n\t\t\tif (this.nativeDraggable) {\n\t\t\t\t_off(document, 'drop', this);\n\t\t\t\t_off(el, 'dragstart', this._onDragStart);\n\t\t\t}\n\n\t\t\tthis._offUpEvents();\n\n\t\t\tif (evt) {\n\t\t\t\tif (moved) {\n\t\t\t\t\tevt.preventDefault();\n\t\t\t\t\t!options.dropBubble && evt.stopPropagation();\n\t\t\t\t}\n\n\t\t\t\tghostEl && ghostEl.parentNode.removeChild(ghostEl);\n\n\t\t\t\tif (dragEl) {\n\t\t\t\t\tif (this.nativeDraggable) {\n\t\t\t\t\t\t_off(dragEl, 'dragend', this);\n\t\t\t\t\t}\n\n\t\t\t\t\t_disableDraggable(dragEl);\n\n\t\t\t\t\t// Remove class's\n\t\t\t\t\t_toggleClass(dragEl, this.options.ghostClass, false);\n\t\t\t\t\t_toggleClass(dragEl, this.options.chosenClass, false);\n\n\t\t\t\t\tif (rootEl !== parentEl) {\n\t\t\t\t\t\tnewIndex = _index(dragEl);\n\n\t\t\t\t\t\tif (newIndex >= 0) {\n\t\t\t\t\t\t\t// drag from one list and drop into another\n\t\t\t\t\t\t\t_dispatchEvent(null, parentEl, 'sort', dragEl, rootEl, oldIndex, newIndex);\n\t\t\t\t\t\t\t_dispatchEvent(this, rootEl, 'sort', dragEl, rootEl, oldIndex, newIndex);\n\n\t\t\t\t\t\t\t// Add event\n\t\t\t\t\t\t\t_dispatchEvent(null, parentEl, 'add', dragEl, rootEl, oldIndex, newIndex);\n\n\t\t\t\t\t\t\t// Remove event\n\t\t\t\t\t\t\t_dispatchEvent(this, rootEl, 'remove', dragEl, rootEl, oldIndex, newIndex);\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t\telse {\n\t\t\t\t\t\t// Remove clone\n\t\t\t\t\t\tcloneEl && cloneEl.parentNode.removeChild(cloneEl);\n\n\t\t\t\t\t\tif (dragEl.nextSibling !== nextEl) {\n\t\t\t\t\t\t\t// Get the index of the dragged element within its parent\n\t\t\t\t\t\t\tnewIndex = _index(dragEl);\n\n\t\t\t\t\t\t\tif (newIndex >= 0) {\n\t\t\t\t\t\t\t\t// drag & drop within the same list\n\t\t\t\t\t\t\t\t_dispatchEvent(this, rootEl, 'update', dragEl, rootEl, oldIndex, newIndex);\n\t\t\t\t\t\t\t\t_dispatchEvent(this, rootEl, 'sort', dragEl, rootEl, oldIndex, newIndex);\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\n\t\t\t\t\tif (Sortable.active) {\n\t\t\t\t\t\tif (newIndex === null || newIndex === -1) {\n\t\t\t\t\t\t\tnewIndex = oldIndex;\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\t_dispatchEvent(this, rootEl, 'end', dragEl, rootEl, oldIndex, newIndex);\n\n\t\t\t\t\t\t// Save sorting\n\t\t\t\t\t\tthis.save();\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Nulling\n\t\t\t\trootEl =\n\t\t\t\tdragEl =\n\t\t\t\tparentEl =\n\t\t\t\tghostEl =\n\t\t\t\tnextEl =\n\t\t\t\tcloneEl =\n\n\t\t\t\tscrollEl =\n\t\t\t\tscrollParentEl =\n\n\t\t\t\ttapEvt =\n\t\t\t\ttouchEvt =\n\n\t\t\t\tmoved =\n\t\t\t\tnewIndex =\n\n\t\t\t\tlastEl =\n\t\t\t\tlastCSS =\n\n\t\t\t\tactiveGroup =\n\t\t\t\tSortable.active = null;\n\t\t\t}\n\t\t},\n\n\n\t\thandleEvent: function (/**Event*/evt) {\n\t\t\tvar type = evt.type;\n\n\t\t\tif (type === 'dragover' || type === 'dragenter') {\n\t\t\t\tif (dragEl) {\n\t\t\t\t\tthis._onDragOver(evt);\n\t\t\t\t\t_globalDragOver(evt);\n\t\t\t\t}\n\t\t\t}\n\t\t\telse if (type === 'drop' || type === 'dragend') {\n\t\t\t\tthis._onDrop(evt);\n\t\t\t}\n\t\t},\n\n\n\t\t/**\n\t\t * Serializes the item into an array of string.\n\t\t * @returns {String[]}\n\t\t */\n\t\ttoArray: function () {\n\t\t\tvar order = [],\n\t\t\t\tel,\n\t\t\t\tchildren = this.el.children,\n\t\t\t\ti = 0,\n\t\t\t\tn = children.length,\n\t\t\t\toptions = this.options;\n\n\t\t\tfor (; i < n; i++) {\n\t\t\t\tel = children[i];\n\t\t\t\tif (_closest(el, options.draggable, this.el)) {\n\t\t\t\t\torder.push(el.getAttribute(options.dataIdAttr) || _generateId(el));\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn order;\n\t\t},\n\n\n\t\t/**\n\t\t * Sorts the elements according to the array.\n\t\t * @param  {String[]}  order  order of the items\n\t\t */\n\t\tsort: function (order) {\n\t\t\tvar items = {}, rootEl = this.el;\n\n\t\t\tthis.toArray().forEach(function (id, i) {\n\t\t\t\tvar el = rootEl.children[i];\n\n\t\t\t\tif (_closest(el, this.options.draggable, rootEl)) {\n\t\t\t\t\titems[id] = el;\n\t\t\t\t}\n\t\t\t}, this);\n\n\t\t\torder.forEach(function (id) {\n\t\t\t\tif (items[id]) {\n\t\t\t\t\trootEl.removeChild(items[id]);\n\t\t\t\t\trootEl.appendChild(items[id]);\n\t\t\t\t}\n\t\t\t});\n\t\t},\n\n\n\t\t/**\n\t\t * Save the current sorting\n\t\t */\n\t\tsave: function () {\n\t\t\tvar store = this.options.store;\n\t\t\tstore && store.set(this);\n\t\t},\n\n\n\t\t/**\n\t\t * For each element in the set, get the first element that matches the selector by testing the element itself and traversing up through its ancestors in the DOM tree.\n\t\t * @param   {HTMLElement}  el\n\t\t * @param   {String}       [selector]  default: `options.draggable`\n\t\t * @returns {HTMLElement|null}\n\t\t */\n\t\tclosest: function (el, selector) {\n\t\t\treturn _closest(el, selector || this.options.draggable, this.el);\n\t\t},\n\n\n\t\t/**\n\t\t * Set/get option\n\t\t * @param   {string} name\n\t\t * @param   {*}      [value]\n\t\t * @returns {*}\n\t\t */\n\t\toption: function (name, value) {\n\t\t\tvar options = this.options;\n\n\t\t\tif (value === void 0) {\n\t\t\t\treturn options[name];\n\t\t\t} else {\n\t\t\t\toptions[name] = value;\n\n\t\t\t\tif (name === 'group') {\n\t\t\t\t\t_prepareGroup(options);\n\t\t\t\t}\n\t\t\t}\n\t\t},\n\n\n\t\t/**\n\t\t * Destroy\n\t\t */\n\t\tdestroy: function () {\n\t\t\tvar el = this.el;\n\n\t\t\tel[expando] = null;\n\n\t\t\t_off(el, 'mousedown', this._onTapStart);\n\t\t\t_off(el, 'touchstart', this._onTapStart);\n\n\t\t\tif (this.nativeDraggable) {\n\t\t\t\t_off(el, 'dragover', this);\n\t\t\t\t_off(el, 'dragenter', this);\n\t\t\t}\n\n\t\t\t// Remove draggable attributes\n\t\t\tArray.prototype.forEach.call(el.querySelectorAll('[draggable]'), function (el) {\n\t\t\t\tel.removeAttribute('draggable');\n\t\t\t});\n\n\t\t\ttouchDragOverListeners.splice(touchDragOverListeners.indexOf(this._onDragOver), 1);\n\n\t\t\tthis._onDrop();\n\n\t\t\tthis.el = el = null;\n\t\t}\n\t};\n\n\n\tfunction _cloneHide(state) {\n\t\tif (cloneEl && (cloneEl.state !== state)) {\n\t\t\t_css(cloneEl, 'display', state ? 'none' : '');\n\t\t\t!state && cloneEl.state && rootEl.insertBefore(cloneEl, dragEl);\n\t\t\tcloneEl.state = state;\n\t\t}\n\t}\n\n\n\tfunction _closest(/**HTMLElement*/el, /**String*/selector, /**HTMLElement*/ctx) {\n\t\tif (el) {\n\t\t\tctx = ctx || document;\n\t\t\tselector = selector.split('.');\n\n\t\t\tvar tag = selector.shift().toUpperCase(),\n\t\t\t\tre = new RegExp('\\\\s(' + selector.join('|') + ')(?=\\\\s)', 'g');\n\n\t\t\tdo {\n\t\t\t\tif (\n\t\t\t\t\t(tag === '>*' && el.parentNode === ctx) || (\n\t\t\t\t\t\t(tag === '' || el.nodeName.toUpperCase() == tag) &&\n\t\t\t\t\t\t(!selector.length || ((' ' + el.className + ' ').match(re) || []).length == selector.length)\n\t\t\t\t\t)\n\t\t\t\t) {\n\t\t\t\t\treturn el;\n\t\t\t\t}\n\t\t\t}\n\t\t\twhile (el !== ctx && (el = el.parentNode));\n\t\t}\n\n\t\treturn null;\n\t}\n\n\n\tfunction _globalDragOver(/**Event*/evt) {\n\t\tif (evt.dataTransfer) {\n\t\t\tevt.dataTransfer.dropEffect = 'move';\n\t\t}\n\t\tevt.preventDefault();\n\t}\n\n\n\tfunction _on(el, event, fn) {\n\t\tel.addEventListener(event, fn, false);\n\t}\n\n\n\tfunction _off(el, event, fn) {\n\t\tel.removeEventListener(event, fn, false);\n\t}\n\n\n\tfunction _toggleClass(el, name, state) {\n\t\tif (el) {\n\t\t\tif (el.classList) {\n\t\t\t\tel.classList[state ? 'add' : 'remove'](name);\n\t\t\t}\n\t\t\telse {\n\t\t\t\tvar className = (' ' + el.className + ' ').replace(RSPACE, ' ').replace(' ' + name + ' ', ' ');\n\t\t\t\tel.className = (className + (state ? ' ' + name : '')).replace(RSPACE, ' ');\n\t\t\t}\n\t\t}\n\t}\n\n\n\tfunction _css(el, prop, val) {\n\t\tvar style = el && el.style;\n\n\t\tif (style) {\n\t\t\tif (val === void 0) {\n\t\t\t\tif (document.defaultView && document.defaultView.getComputedStyle) {\n\t\t\t\t\tval = document.defaultView.getComputedStyle(el, '');\n\t\t\t\t}\n\t\t\t\telse if (el.currentStyle) {\n\t\t\t\t\tval = el.currentStyle;\n\t\t\t\t}\n\n\t\t\t\treturn prop === void 0 ? val : val[prop];\n\t\t\t}\n\t\t\telse {\n\t\t\t\tif (!(prop in style)) {\n\t\t\t\t\tprop = '-webkit-' + prop;\n\t\t\t\t}\n\n\t\t\t\tstyle[prop] = val + (typeof val === 'string' ? '' : 'px');\n\t\t\t}\n\t\t}\n\t}\n\n\n\tfunction _find(ctx, tagName, iterator) {\n\t\tif (ctx) {\n\t\t\tvar list = ctx.getElementsByTagName(tagName), i = 0, n = list.length;\n\n\t\t\tif (iterator) {\n\t\t\t\tfor (; i < n; i++) {\n\t\t\t\t\titerator(list[i], i);\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn list;\n\t\t}\n\n\t\treturn [];\n\t}\n\n\n\n\tfunction _dispatchEvent(sortable, rootEl, name, targetEl, fromEl, startIndex, newIndex) {\n\t\tvar evt = document.createEvent('Event'),\n\t\t\toptions = (sortable || rootEl[expando]).options,\n\t\t\tonName = 'on' + name.charAt(0).toUpperCase() + name.substr(1);\n\n\t\tevt.initEvent(name, true, true);\n\n\t\tevt.to = rootEl;\n\t\tevt.from = fromEl || rootEl;\n\t\tevt.item = targetEl || rootEl;\n\t\tevt.clone = cloneEl;\n\n\t\tevt.oldIndex = startIndex;\n\t\tevt.newIndex = newIndex;\n\n\t\trootEl.dispatchEvent(evt);\n\n\t\tif (options[onName]) {\n\t\t\toptions[onName].call(sortable, evt);\n\t\t}\n\t}\n\n\n\tfunction _onMove(fromEl, toEl, dragEl, dragRect, targetEl, targetRect) {\n\t\tvar evt,\n\t\t\tsortable = fromEl[expando],\n\t\t\tonMoveFn = sortable.options.onMove,\n\t\t\tretVal;\n\n\t\tevt = document.createEvent('Event');\n\t\tevt.initEvent('move', true, true);\n\n\t\tevt.to = toEl;\n\t\tevt.from = fromEl;\n\t\tevt.dragged = dragEl;\n\t\tevt.draggedRect = dragRect;\n\t\tevt.related = targetEl || toEl;\n\t\tevt.relatedRect = targetRect || toEl.getBoundingClientRect();\n\n\t\tfromEl.dispatchEvent(evt);\n\n\t\tif (onMoveFn) {\n\t\t\tretVal = onMoveFn.call(sortable, evt);\n\t\t}\n\n\t\treturn retVal;\n\t}\n\n\n\tfunction _disableDraggable(el) {\n\t\tel.draggable = false;\n\t}\n\n\n\tfunction _unsilent() {\n\t\t_silent = false;\n\t}\n\n\n\t/** @returns {HTMLElement|false} */\n\tfunction _ghostIsLast(el, evt) {\n\t\tvar lastEl = el.lastElementChild,\n\t\t\t\trect = lastEl.getBoundingClientRect();\n\n\t\treturn ((evt.clientY - (rect.top + rect.height) > 5) || (evt.clientX - (rect.right + rect.width) > 5)) && lastEl; // min delta\n\t}\n\n\n\t/**\n\t * Generate id\n\t * @param   {HTMLElement} el\n\t * @returns {String}\n\t * @private\n\t */\n\tfunction _generateId(el) {\n\t\tvar str = el.tagName + el.className + el.src + el.href + el.textContent,\n\t\t\ti = str.length,\n\t\t\tsum = 0;\n\n\t\twhile (i--) {\n\t\t\tsum += str.charCodeAt(i);\n\t\t}\n\n\t\treturn sum.toString(36);\n\t}\n\n\t/**\n\t * Returns the index of an element within its parent\n\t * @param  {HTMLElement} el\n\t * @return {number}\n\t */\n\tfunction _index(el) {\n\t\tvar index = 0;\n\n\t\tif (!el || !el.parentNode) {\n\t\t\treturn -1;\n\t\t}\n\n\t\twhile (el && (el = el.previousElementSibling)) {\n\t\t\tif (el.nodeName.toUpperCase() !== 'TEMPLATE') {\n\t\t\t\tindex++;\n\t\t\t}\n\t\t}\n\n\t\treturn index;\n\t}\n\n\tfunction _throttle(callback, ms) {\n\t\tvar args, _this;\n\n\t\treturn function () {\n\t\t\tif (args === void 0) {\n\t\t\t\targs = arguments;\n\t\t\t\t_this = this;\n\n\t\t\t\tsetTimeout(function () {\n\t\t\t\t\tif (args.length === 1) {\n\t\t\t\t\t\tcallback.call(_this, args[0]);\n\t\t\t\t\t} else {\n\t\t\t\t\t\tcallback.apply(_this, args);\n\t\t\t\t\t}\n\n\t\t\t\t\targs = void 0;\n\t\t\t\t}, ms);\n\t\t\t}\n\t\t};\n\t}\n\n\tfunction _extend(dst, src) {\n\t\tif (dst && src) {\n\t\t\tfor (var key in src) {\n\t\t\t\tif (src.hasOwnProperty(key)) {\n\t\t\t\t\tdst[key] = src[key];\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn dst;\n\t}\n\n\n\t// Export utils\n\tSortable.utils = {\n\t\ton: _on,\n\t\toff: _off,\n\t\tcss: _css,\n\t\tfind: _find,\n\t\tis: function (el, selector) {\n\t\t\treturn !!_closest(el, selector, el);\n\t\t},\n\t\textend: _extend,\n\t\tthrottle: _throttle,\n\t\tclosest: _closest,\n\t\ttoggleClass: _toggleClass,\n\t\tindex: _index\n\t};\n\n\n\t/**\n\t * Create sortable instance\n\t * @param {HTMLElement}  el\n\t * @param {Object}      [options]\n\t */\n\tSortable.create = function (el, options) {\n\t\treturn new Sortable(el, options);\n\t};\n\n\n\t// Export\n\tSortable.version = '1.4.2';\n\treturn Sortable;\n});\n","/**\n * @author RubaXa <trash@rubaxa.org>\n * @licence MIT\n */\n(function (factory) {\n\t'use strict';\n\n\tif (typeof define === 'function' && define.amd) {\n\t\tdefine(['angular', './Sortable'], factory);\n\t}\n\telse if (typeof require === 'function' && typeof exports === 'object' && typeof module === 'object') {\n\t\trequire('angular');\n\t\tfactory(angular, require('./Sortable'));\n\t\tmodule.exports = 'ng-sortable';\n\t}\n\telse if (window.angular && window.Sortable) {\n\t\tfactory(angular, Sortable);\n\t}\n})(function (angular, Sortable) {\n\t'use strict';\n\n\n\t/**\n\t * @typedef   {Object}        ngSortEvent\n\t * @property  {*}             model      List item\n\t * @property  {Object|Array}  models     List of items\n\t * @property  {number}        oldIndex   before sort\n\t * @property  {number}        newIndex   after sort\n\t */\n\n\tvar expando = 'Sortable:ng-sortable';\n\n\tangular.module('ng-sortable', [])\n\t\t.constant('ngSortableVersion', '0.4.0')\n\t\t.constant('ngSortableConfig', {})\n\t\t.directive('ngSortable', ['$parse', 'ngSortableConfig', function ($parse, ngSortableConfig) {\n\t\t\tvar removed,\n\t\t\t\tnextSibling,\n\t\t\t\tgetSourceFactory = function getSourceFactory(el, scope) {\n\t\t\t\t\tvar ngRepeat = [].filter.call(el.childNodes, function (node) {\n\t\t\t\t\t\treturn (\n\t\t\t\t\t\t\t\t(node.nodeType === 8) &&\n\t\t\t\t\t\t\t\t(node.nodeValue.indexOf('ngRepeat:') !== -1)\n\t\t\t\t\t\t\t);\n\t\t\t\t\t})[0];\n\n\t\t\t\t\tif (!ngRepeat) {\n\t\t\t\t\t\t// Without ng-repeat\n\t\t\t\t\t\treturn function () {\n\t\t\t\t\t\t\treturn null;\n\t\t\t\t\t\t};\n\t\t\t\t\t}\n\n\t\t\t\t\t// tests: http://jsbin.com/kosubutilo/1/edit?js,output\n\t\t\t\t\tngRepeat = ngRepeat.nodeValue.match(/ngRepeat:\\s*(?:\\(.*?,\\s*)?([^\\s)]+)[\\s)]+in\\s+([^\\s|]+)/);\n\n\t\t\t\t\tvar itemsExpr = $parse(ngRepeat[2]);\n\n\t\t\t\t\treturn function () {\n\t\t\t\t\t\treturn itemsExpr(scope.$parent) || [];\n\t\t\t\t\t};\n\t\t\t\t};\n\n\n\t\t\t// Export\n\t\t\treturn {\n\t\t\t\trestrict: 'AC',\n\t\t\t\tscope: { ngSortable: \"=?\" },\n\t\t\t\tlink: function (scope, $el) {\n\t\t\t\t\tvar el = $el[0],\n\t\t\t\t\t\toptions = angular.extend(scope.ngSortable || {}, ngSortableConfig),\n\t\t\t\t\t\twatchers = [],\n\t\t\t\t\t\tgetSource = getSourceFactory(el, scope),\n\t\t\t\t\t\tsortable\n\t\t\t\t\t;\n\n\t\t\t\t\tel[expando] = getSource;\n\n\t\t\t\t\tfunction _emitEvent(/**Event*/evt, /*Mixed*/item) {\n\t\t\t\t\t\tvar name = 'on' + evt.type.charAt(0).toUpperCase() + evt.type.substr(1);\n\t\t\t\t\t\tvar source = getSource();\n\n\t\t\t\t\t\t/* jshint expr:true */\n\t\t\t\t\t\toptions[name] && options[name]({\n\t\t\t\t\t\t\tmodel: item || source[evt.newIndex],\n\t\t\t\t\t\t\tmodels: source,\n\t\t\t\t\t\t\toldIndex: evt.oldIndex,\n\t\t\t\t\t\t\tnewIndex: evt.newIndex\n\t\t\t\t\t\t});\n\t\t\t\t\t}\n\n\n\t\t\t\t\tfunction _sync(/**Event*/evt) {\n\t\t\t\t\t\tvar items = getSource();\n\n\t\t\t\t\t\tif (!items) {\n\t\t\t\t\t\t\t// Without ng-repeat\n\t\t\t\t\t\t\treturn;\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tvar oldIndex = evt.oldIndex,\n\t\t\t\t\t\t\tnewIndex = evt.newIndex;\n\n\t\t\t\t\t\tif (el !== evt.from) {\n\t\t\t\t\t\t\tvar prevItems = evt.from[expando]();\n\n\t\t\t\t\t\t\tremoved = prevItems[oldIndex];\n\n\t\t\t\t\t\t\tif (evt.clone) {\n\t\t\t\t\t\t\t\tremoved = angular.copy(removed);\n\t\t\t\t\t\t\t\tprevItems.splice(Sortable.utils.index(evt.clone), 0, prevItems.splice(oldIndex, 1)[0]);\n\t\t\t\t\t\t\t\tevt.from.removeChild(evt.clone);\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\telse {\n\t\t\t\t\t\t\t\tprevItems.splice(oldIndex, 1);\n\t\t\t\t\t\t\t}\n\n\t\t\t\t\t\t\titems.splice(newIndex, 0, removed);\n\n\t\t\t\t\t\t\tevt.from.insertBefore(evt.item, nextSibling); // revert element\n\t\t\t\t\t\t}\n\t\t\t\t\t\telse {\n\t\t\t\t\t\t\titems.splice(newIndex, 0, items.splice(oldIndex, 1)[0]);\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tscope.$apply();\n\t\t\t\t\t}\n\n\n\t\t\t\t\tsortable = Sortable.create(el, Object.keys(options).reduce(function (opts, name) {\n\t\t\t\t\t\topts[name] = opts[name] || options[name];\n\t\t\t\t\t\treturn opts;\n\t\t\t\t\t}, {\n\t\t\t\t\t\tonStart: function (/**Event*/evt) {\n\t\t\t\t\t\t\tnextSibling = evt.item.nextSibling;\n\t\t\t\t\t\t\t_emitEvent(evt);\n\t\t\t\t\t\t\tscope.$apply();\n\t\t\t\t\t\t},\n\t\t\t\t\t\tonEnd: function (/**Event*/evt) {\n\t\t\t\t\t\t\t_emitEvent(evt, removed);\n\t\t\t\t\t\t\tscope.$apply();\n\t\t\t\t\t\t},\n\t\t\t\t\t\tonAdd: function (/**Event*/evt) {\n\t\t\t\t\t\t\t_sync(evt);\n\t\t\t\t\t\t\t_emitEvent(evt, removed);\n\t\t\t\t\t\t\tscope.$apply();\n\t\t\t\t\t\t},\n\t\t\t\t\t\tonUpdate: function (/**Event*/evt) {\n\t\t\t\t\t\t\t_sync(evt);\n\t\t\t\t\t\t\t_emitEvent(evt);\n\t\t\t\t\t\t},\n\t\t\t\t\t\tonRemove: function (/**Event*/evt) {\n\t\t\t\t\t\t\t_emitEvent(evt, removed);\n\t\t\t\t\t\t},\n\t\t\t\t\t\tonSort: function (/**Event*/evt) {\n\t\t\t\t\t\t\t_emitEvent(evt);\n\t\t\t\t\t\t}\n\t\t\t\t\t}));\n\n\t\t\t\t\t$el.on('$destroy', function () {\n\t\t\t\t\t\tangular.forEach(watchers, function (/** Function */unwatch) {\n\t\t\t\t\t\t\tunwatch();\n\t\t\t\t\t\t});\n\n\t\t\t\t\t\tsortable.destroy();\n\n\t\t\t\t\t\tel[expando] = null;\n\t\t\t\t\t\tel = null;\n\t\t\t\t\t\twatchers = null;\n\t\t\t\t\t\tsortable = null;\n\t\t\t\t\t\tnextSibling = null;\n\t\t\t\t\t});\n\n\t\t\t\t\tangular.forEach([\n\t\t\t\t\t\t'sort', 'disabled', 'draggable', 'handle', 'animation', 'group', 'ghostClass', 'filter',\n\t\t\t\t\t\t'onStart', 'onEnd', 'onAdd', 'onUpdate', 'onRemove', 'onSort'\n\t\t\t\t\t], function (name) {\n\t\t\t\t\t\twatchers.push(scope.$watch('ngSortable.' + name, function (value) {\n\t\t\t\t\t\t\tif (value !== void 0) {\n\t\t\t\t\t\t\t\toptions[name] = value;\n\n\t\t\t\t\t\t\t\tif (!/^on[A-Z]/.test(name)) {\n\t\t\t\t\t\t\t\t\tsortable.option(name, value);\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}));\n\t\t\t\t\t});\n\t\t\t\t}\n\t\t\t};\n\t\t}]);\n});\n"]}
\ No newline at end of file
diff --git a/UI/WebServerResources/scss/components/list/list.scss b/UI/WebServerResources/scss/components/list/list.scss
index 311ed53bd..f32d8dcdf 100644
--- a/UI/WebServerResources/scss/components/list/list.scss
+++ b/UI/WebServerResources/scss/components/list/list.scss
@@ -229,40 +229,64 @@ div.md-tile-left {
       min-width: $sg-font-size-1;
     }
   }
+}
 
-  /* Classes for ng-sortable */
-  &-sortable-grip {
-    &:hover {
-      cursor: move;
-    }
+/**
+ * Sortable list items are provided by the ng-sortable library. CSS classes are
+ * from ng-sortable are prefixed by as-. Basic rules come from the CSS file
+ * bundled with the library.
+ *
+ * 1. We hide sortable handles when not inside a .sg-list-sortable;
+ * 2. Elements wih the class .sg-list-sortable-hide are hidden when the list is
+ *    currently sortable;
+ * 3. Dragged element is highligh with a whiteframe.
+ *
+ * See https://github.com/a5hik/ng-sortable
+ */
+
+.as-sortable-item {
+  touch-action: none;
+}
+
+.as-sortable-hidden {
+  display: none !important;
+}
+
+.as-sortable-un-selectable {
+  user-select: none;
+}
+
+.as-sortable-item-handle {
+  display: none; /* [1] */
+}
+
+.sg-list-sortable {
+  .as-sortable-item-handle {
+    cursor: move;
+    display: block; /* [1] */
   }
-
-  &-sortable-chosen {
-    background-color: white;
-  }
-
-  &-sortable-ghost {
-    opacity: 0.5;
-  }
-
-  &-list-sortable {
-    ._md-secondary-container > .md-menu {
-      .md-button {
-        display: none;
-      }
-      &:before {
-        @extend .material-icons;
-        content: "\e8fe";
-        cursor: move;
-      }
-    }
+  .sg-list-sortable-hide {
+    display: none; /* [2] */
   }
 }
 
+.as-sortable-drag { /* [3] */
+  @extend .md-whiteframe-1dp;
+  background-color: rgba(255,255,255,0.4);
+  position: absolute;
+  pointer-events: none;
+  z-index: 9999;
+}
+
+/**
+ * A md-avatar can either include a md-icon or an img.
+ */
+
 .card-picture {
   .md-avatar {
     display: block;
-    // From md-list-item > .md-avatar:first-child
+
+    // From md-list-item ._md-list-item-inner .md-avatar
     width: $list-item-primary-avatar-width;
     height: $list-item-primary-avatar-width;
     margin-top: $baseline-grid;
@@ -270,14 +294,13 @@ div.md-tile-left {
     margin-right: $list-item-primary-width - $list-item-primary-avatar-width;
     border-radius: 50%;
     box-sizing: content-box;
+
     img {
       width: initial !important;
     }
   }
 }
 
-// Avatar placeholder
-// ------------------------------------
 .md-avatar:before,
 .md-avatar md-icon,
 sg-avatar-image md-icon,
@@ -297,20 +320,20 @@ sg-avatar-image .material-icons {
   }
 }
 
-/*------------------------------------*\
-    SG-AVATAR-IMAGE DIRECTIVE
-\*------------------------------------*/
-
 sg-avatar-image img {
   border-radius: 50%;
 }
 
-/*------------------------------------*\
-    SELECTABLE AVATARS
-\*------------------------------------*/
+/**
+ * In the middle list of the main view, we allow items selection through a
+ * checkbox that replaces the avatar when
+ *
+ * 1. the mouse cursor is over the selectable avatar;
+ * 2. the list is marked as selectable.
+ */
 
-.sg-list-selectable .sg-avatar-selectable,
-.sg-avatar-selectable:hover {
+.sg-avatar-selectable:hover, /* [1] */
+.sg-list-selectable .sg-avatar-selectable { /* [2] */
   font-family: 'Material Icons';
   font-size: $sg-avatar-width;
   height: 100%;
@@ -328,71 +351,3 @@ sg-avatar-image img {
     display: none;
   }
 }
-//.md-tile-left-accepted:before {
-//  @extend .md-tile-left;
-//  background-color: rgba(0, 255, 0, 0.3) !important;
-//  content: "\e5ca"; // check
-//  color: rgba(0, 0, 0, 0.5);
-//}
-//.md-tile-left-declined:before {
-//  @extend .md-tile-left;
-//  background-color: rgba(255, 0, 0, 0.3) !important;
-//  content: "\e15b"; // remove
-//  color: rgba(0, 0, 0, 0.5);
-//}
-//.md-tile-left-delegated:before {
-//  @extend .md-tile-left;
-//  background-color: rgba(192, 192, 192, 0.3) !important;
-//  content: "\e5c8"; // arrow-forward
-//  color: rgba(0, 0, 0, 0.5);
-//}
-//.md-tile-left-needs-action:before {
-//  @extend .md-tile-left;
-//  background-color: rgba(255, 255, 0, 0.3) !important;
-//  content: "?";
-//}
-//.md-tile-left-tentative:before {
-//  @extend .md-tile-left;
-//  background-color: rgba(255, 255, 0, 0.3) !important;
-//  content: "\e7fd"; // person
-//}
-//.sg-avatar {
-//  @extend .md-tile-left-card;
-//  margin-right: 0;
-//  margin-left: 0;
-//}
-//.sg-list-avatar {
-//  @extend .md-tile-left-list;
-//  margin-right: 0;
-//  margin-left: 0;
-//}
-//.sg-selected-avatar {
-//  @extend .md-tile-left-selected;
-//  margin-right: 0;
-//  margin-left: 0;
-//}
-//.sg-accepted {
-//  @extend .md-tile-left-accepted;
-//  margin-right: 0;
-//  margin-left: 0;
-//}
-//.sg-declined {
-//  @extend .md-tile-left-declined;
-//  margin-right: 0;
-//  margin-left: 0;
-//}
-//.sg-delegated {
-//  @extend .md-tile-left-delegated;
-//  margin-right: 0;
-//  margin-left: 0;
-//}
-//.sg-needs-action {
-//  @extend .md-tile-left-needs-action;
-//  margin-right: 0;
-//  margin-left: 0;
-//}
-//.sg-tentative {
-//  @extend .md-tile-left-tentative;
-//  margin-right: 0;
-//  margin-left: 0;
-//}