VRECollections.mine() === (new VRECollections).fetch() (#224)

As of #181, /api/collections only retrieves the user's own collections
by default. The .mine method is retained for easier porting and as an
easy way to resume the distinction if it is added again in the future.

frontend/vre/collection/collection.model.js

@@ -33,7 +33,7 @@ export var VRECollections = APICollection.extend({
      */
     mine: function(myCollections) {
         myCollections = myCollections || new VRECollections();
-        myCollections.fetch({url: myCollections.url + 'mine/'});
+        myCollections.fetch();
         return myCollections;
     },
 });