FB: Notification drawer custom background & notification rows transparency (1/2)

Change-Id: Id1509362dc4bd63c6553334c862c7d101af41b10

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java

Build Fixes

Change-Id: Idad750187539d0726ebb66873ed876ecc73c2bb1