Status bar brightness control

Change-Id: Ibc5cc15a9b43eade73670d308d5cc788c93b6210

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
Fix battery icon style