[#1977] APIv2 WIP - start of a framework where operations are shared

between client & server. If the op is called on the client, it updates
the user & then POSTs to the server with op of the same name. If called
on server, it updates the user and user.save()s

public/js/controllers/notificationCtrl.js

@@ -53,7 +53,7 @@ habitrpg.controller('NotificationCtrl',
 
     $rootScope.$watch('user.items.pets', function(after, before){
       if(_.size(after) === _.size(before) || 
-        window.habitrpgShared.helpers.countPets(null, after) < 90) return;
+        $rootScope.Shared.countPets(null, after) < 90) return;
       User.user.achievements.beastMaster = true;
       $rootScope.modals.achievements.beastMaster = true;
     }, true);