Forward port Status Bar settings

Patch Set 2: Rebase
Patch Set 3: Commit message
Patch Set 4: Remove (default) designation in AM/PM style options
Patch Set 5: Remove Combined Bar options
Patch Set 6: Remove Auto Brightness Slider options
Patch Set 7: Adjust Signal status style availability according to new
tablet devices
Patch Set 8: Rebase
Patch Set 9: Updated commit message

Change-Id: I1632b6454a3fd5240179dfed34b1f332a7a37cda