Add existing series shows a loading message

Fixed: Message to tell users series are being loaded from trakt

src/UI/AddSeries/Existing/AddExistingSeriesCollectionView.js

@@ -6,9 +6,15 @@ define(
         'AddSeries/Existing/UnmappedFolderCollection'
     ], function (Marionette, AddSeriesView, UnmappedFolderCollection) {
 
-        return Marionette.CollectionView.extend({
+        return Marionette.CompositeView.extend({
 
-            itemView: AddSeriesView,
+            itemView         : AddSeriesView,
+            itemViewContainer: '.x-loading-folders',
+            template         : 'AddSeries/Existing/AddExistingSeriesCollectionViewTemplate',
+
+            ui: {
+                loadingFolders: '.x-loading-folders'
+            },
 
             initialize: function () {
                 this.collection = new UnmappedFolderCollection();
@@ -19,6 +25,10 @@ define(
                 this._showAndSearch(0);
             },
 
+            appendHtml: function(collectionView, itemView, index){
+                collectionView.ui.loadingFolders.before(itemView.el);
+            },
+
             _showAndSearch: function (index) {
                 var self = this;
                 var model = this.collection.at(index);
@@ -35,6 +45,10 @@ define(
                             }
                         });
                 }
+
+                else {
+                    this.ui.loadingFolders.hide();
+                }
             },
 
             itemViewOptions: {