Settings: Show SAR on Regulatory Info (from CM11)

This brings these three commits from CM11:

Settings: Create SAR level preference, allow overlay.
Change-Id: I1af616696702f72b8a6276b3b01e940d61735137

Change Regulatory Info Activity to prefer string over image
Change-Id: I9ea5c2bf469af8f654ec4e4bb4f2a8a5738e6a95

Settings: Allow Regulator Information Dialog Title to be overlaid.
Change-Id: I5aead313589f5d5291d20a0388d2d8bc7242b711