Charging animation for battery percent style

Inspired from circle style

http://jira.omnirom.org/browse/OMNI-840

PS3:
-using bar style

PS8:
-again full height band

Change-Id: I5a83cd7ea6fa437a9bdf0e9b4451071a591cd3b5

Conflicts:
	packages/SystemUI/res/layout/quick_settings_tile_back_battery.xml
	packages/SystemUI/res/values/colors.xml
	packages/SystemUI/src/com/android/systemui/BatteryPercentMeterView.java