Quick draft of a plugin to make Menu Items have a star to act as a favorite.
In the handler, you can pass true, false, or 'wait'. If you pass true it will mark the star to a brighter yellow. If you pass false, nothing will happen. If you pass 'wait', a wait dialog will be shown while you can make an AJAX call or something. Then you can use the setMarked method and pass true/false in your callback.
GitHub repo - https://github.com/mitchellsimoens/E...s4.FavMenuItem