SystemUI: Battery Bar

added battery bar into JB
might consider adding statusbar battery bar
to the new notification pulldown as well

Change-Id: Ic2ff3d1696ba00360fc360405aa9a65574e99c11
Signed-off-by: Adam Fisch <adammfisch@gmail.com>

Conflicts:

	core/java/android/provider/Settings.java
	packages/SystemUI/res/values/attrs.xml

Signed-off-by: iceandfire <arhamjamal@gmail.com>