bluetooth: Show a refresh icon on the select devices screen

The refresh menu is hidden behind an overflow which is
pointless. This patch shows the refresh icon if there is
enough room.

Change-Id: I35f19c42054b05388f7b8fcb82e0f3bd60e2d618
Merge pull request #1 from CyanogenMod/cm-12.0

bluetooth: Show a refresh icon on the select devices screen