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
As commented above, I don't think this file is necessary here. We can use [Building Blocks from shared](https://github.com/mozilla-b2g/gaia/tree/master/shared/style/action_menu)