fb: slightly adjust navigationring background drawable size

for custom icons to fit the system icons

Change-Id: I068cd0a463484f0f1b3ed0f210701290be364b7a
fb: fix possible NPE on back button transition

Change-Id: Ia6e30a9d94f292e7616b846f159b61fed9f502cc
fb: refactor QuietHours code

thanks to ivisiblk for the idea

Change-Id: I56e2b4a1945a4b93251b9937b701c86168b732b4

Conflicts:
	services/java/com/android/server/BatteryService.java
	services/java/com/android/server/NotificationManagerService.java
	services/java/com/android/server/VibratorService.java
Quiet Hours Ringer (2/3)

Change-Id: Id58ffb24f0d0d57d8446265c899ec4124fe00c70
fb: navigationbar use always actions and add content description

No need to use the AOSP implementation at all...we can send all actions
over SlimActions....so remove AOSP implementation and clean up

As well add contentdescription for accessibility events like talkback
for ppl who are not able to see. Gives the user all information back
needed.

Change-Id: I8f82f1139f1248d9cf8e762d6669bb75ae4e205f

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/policy/KeyButtonView.java
Fix custom carrier text derp
Call to equals() comparing different types (FindBugs)

Call to HashSet<PrintServiceInfo>.equals(ArrayList<PrintServiceInfo>).
The result of this comparison will always be false.

Change-Id: Ic8cc6eab99cea4c7b3841faf6bc84c246273e8d0