Bug972573, The selection screen for adding a contact with multiple phone...

... numbers to a SMS message lacks a cancel, back, or 'x' button

Change from ValueSelector to ActionMenu

https://bugzilla.mozilla.org/show_bug.cgi?id=972573
Same thing again - why do we need our own action-menu it we have it in Building Blocks of Gaia? Have you tried to use [those files](https://github.com/mozilla-b2g/gaia/tree/master/shared/style/action_menu)? I think it would help us with duplicating all the work that was done there.