Use OC.Backbone instead of Backbone directly in authtoken JS code

Fixes asset pipeline issue with the auth token in personal page

settings/js/authtoken.js

  *
  */
 
-(function(OC, Backbone) {
+(function(OC) {
 	'use strict';
 
 	OC.Settings = OC.Settings || {};
 
-	var AuthToken = Backbone.Model.extend({
+	var AuthToken = OC.Backbone.Model.extend({
 	});
 
 	OC.Settings.AuthToken = AuthToken;
 
-})(OC, Backbone);
+})(OC);

settings/js/authtoken_collection.js

  *
  */
 
-(function(OC, Backbone) {
+(function(OC) {
 	'use strict';
 
 	OC.Settings = OC.Settings || {};
 
-	var AuthTokenCollection = Backbone.Collection.extend({
+	var AuthTokenCollection = OC.Backbone.Collection.extend({
 
 		model: OC.Settings.AuthToken,
 
 
 	OC.Settings.AuthTokenCollection = AuthTokenCollection;
 
-})(OC, Backbone);
+})(OC);

settings/js/authtoken_view.js

-/* global Backbone, Handlebars, moment */
+/* global Handlebars, moment */
 
 /**
  * @author Christoph Wurst <christoph@owncloud.com>
  *
  */
 
-(function(OC, _, Backbone, $, Handlebars, moment) {
+(function(OC, _, $, Handlebars, moment) {
 	'use strict';
 
 	OC.Settings = OC.Settings || {};
 		+ '<td><a class="icon-delete has-tooltip" title="' + t('core', 'Disconnect') + '"></a></td>'
 		+ '<tr>';
 
-	var SubView = Backbone.View.extend({
+	var SubView = OC.Backbone.View.extend({
 		collection: null,
 
 		/**
 		}
 	});
 
-	var AuthTokenView = Backbone.View.extend({
+	var AuthTokenView = OC.Backbone.View.extend({
 		collection: null,
 
 		_views: [],
 
 	OC.Settings.AuthTokenView = AuthTokenView;
 
-})(OC, _, Backbone, $, Handlebars, moment);
+})(OC, _, $, Handlebars, moment);