Notification Panel / QS - Redesign [Part 3]

Other minor fixes and polishes
This is mostly for fixing the notification drop shadows
and adding borders to QuickSettings view

Things in commits:
	1) New notification large icon drawable
	2) More QS tile icons themed
	3) Borders in QS view
	4) Other various clean-up and fixes probs

Signed-off-by: Chintan Shah <cgintan1998@gmail.com>