General fixes to tabui... again

* Fix brightness crash by implementing a bar callback on NotificationPanel. I also
Leave NotificationArea management to show(boolean, boolean) method on NotificationPanel
* Per app color :D
Provide a bar to QuickSettings class, so he can collapse the panels
(cherry picked from commit 45ee1896a032328612257059002ee9ac224da6ec)

Conflicts:

	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
	packages/SystemUI/src/com/android/systemui/statusbar/tablet/TabletStatusBar.java

Change-Id: I32481f59cb9c7ef5dfb7c9354121dc0cd7fa7abb