Frameworks_base: Welcome BatteryBar [1/2]

 Adds Battery bar with following features:
 location set
 color
 aligment
 thickness
 charging animation

Frameworks_base: update battery bar default color to match kitkat ui (1/2)

Change-Id: Ibdd29738aacd60b8bc34f259cfdcd154e63327cd

Conflicts:
	packages/SystemUI/res/layout/navigation_bar.xml
	packages/SystemUI/res/values/cr_attrs.xml