Created 'More menu' widget and added it to the unplaced unit token

Created the more menu widget. Added the more menu widget to the unplaced unit token. Also a drive by to add the correct shadow to the unplaced unit token.
The ancestor stuff is actually unrelated to hiding the menus (that's just for grabbing the id to find the token for showing the new menu).

The entirety of hiding the old menu is `this.get('container').one('.yui3-moremenu.open').removeClass('open')`

I'd be happy with that approach or tracking the state in a variable.