halo performance, batch revamp

Change-Id: Ic32c146a1e4753c5a3342831d6c719a654816e54
Signed-off-by: PipelinerArd <kristoferard@gmail.com>

Conflicts:
	packages/SystemUI/res/drawable/halo_count_shape.xml
	packages/SystemUI/res/layout/halo_number.xml