cleanup interface settings, drop "More..." entry

also fix up the duplicate Expanded Desktop modes

Change-Id: Ied13eca73b3b973f3894b0adbe9e294b43225fd3
create navigationbar settings

move navigation bar related settings below "Button" settings

drawables borrowed from @AOKP

Change-Id: I96cea9ee23ba1cbdc2d23f3caba992f48524b9f3