Advanced low battery indicator options (1/2)

http://i.imgur.com/EUwRPh7.png

http://i.imgur.com/LX4SrC0.png

Change-Id: I84476626b0ff5424454a1132ea4ef77a696070c1

Conflicts:

	packages/SystemUI/src/com/android/systemui/power/PowerUI.java