Improve sgFolderTree directive for mobile

UI/Templates/Themes/mobile/MailerUI/UIxMailMainFrame.wox

@@ -34,7 +34,8 @@
           <sg-folder-tree ng-repeat="folder in account.$mailboxes track by folder.id"
                           sg-root="account"
                           sg-folder="folder"
-                          sg-set-folder="setCurrentFolder"><!-- tree --></sg-folder-tree>
+                          sg-set-folder="setCurrentFolder"
+                          sg-edit="edit"><!-- tree --></sg-folder-tree>
         </ion-list>
       </ion-content>
     </ion-view>

UI/WebServerResources/js/Common/ui-mobile.js

@@ -69,7 +69,8 @@
         scope: {
           root: '=sgRoot',
           folder: '=sgFolder',
-          setFolder: '=sgSetFolder'
+          setFolder: '=sgSetFolder',
+          edit: '=sgEdit'
         },
         template:
           '<ion-item option-buttons="buttons" class="item-icon-left item-icon-right"' +

UI/WebServerResources/js/mobile/MailerUI.js

@@ -129,7 +129,7 @@
       $scope.ApplicationBaseURL = ApplicationBaseURL;
     }])
 
-    .controller('MailboxesCtrl', ['$scope', '$http', '$state', '$ionicActionSheet', 'sgAccount', 'sgMailbox', 'encodeUriFilter', 'stateAccounts', function($scope, $http, $state, $ionicActionSheet, Account, Mailbox, encodeUriFilter, stateAccounts) {
+    .controller('MailboxesCtrl', ['$scope', '$http', '$state', '$ionicActionSheet', '$ionicListDelegate', 'sgAccount', 'sgMailbox', 'encodeUriFilter', 'stateAccounts', function($scope, $http, $state, $ionicActionSheet, $ionicListDelegate, Account, Mailbox, encodeUriFilter, stateAccounts) {
       $scope.accounts = stateAccounts
 
       $scope.setCurrentFolder = function(account, folder) {