Replace ngTagsInput by md-chips + md-autocomplete

UI/WebServerResources/bower.json

@@ -11,7 +11,6 @@
     "angular-file-upload": "latest",
     "angular-material": "master",
     "material-design-iconic-font": "latest",
-    "ng-tags-input": "latest",
     "compass-mixins": "latest",
     "underscore": "latest",
     "breakpoint-slicer": "~1.3.6"