removed NzbDrone. namespace, everything is done using require.

UI/Shared/LoadingView.js

@@ -1,10 +1,10 @@
-'use strict';
-
-define(['app'], function () {
-    NzbDrone.Shared.LoadingView = Backbone.Marionette.ItemView.extend({
-        template : 'Shared/LoadingTemplate',
-        className: 'nz-loading row'
+'use strict';
+define(
+    [
+        'marionette'
+    ], function (Marionette) {
+        return Marionette.ItemView.extend({
+            template : 'Shared/LoadingTemplate',
+            className: 'nz-loading row'
+        });
     });
-
-    return  NzbDrone.Shared.LoadingView;
-});