Base:Quiet Hours[1/2]

based on cm && based on Omni's adaptation & AOSPA

PS3: Whitespace fixups
PS4: fix imports for QHHelper
PS5: We don't have battery LED enabled

Conflicts:
	services/java/com/android/server/NotificationManagerService.java
VolumePanel: Don't force show NavBar

Fixed:Navigation bar is shown while changing volume while in immersive mode.