[1/2] Add battery level around unlock ring

PS2: removed stray tab

Change-Id: I8447e76b31c6ef00084c6c1b421f75a2e73f911b

Conflicts:

	core/java/android/provider/Settings.java
	core/java/com/android/internal/widget/multiwaveview/GlowPadView.java
	policy/src/com/android/internal/policy/impl/keyguard/KeyguardSelectorView.java