Framework: Port notification drawer custom background (2/2)

Patchset 2
- one small correction

Change-Id: I017bf281426fbf3c5f0525dde81a43bef60c7193
Framework: Add notification rows transparency (2/2)

Patchset 2+3
-rebased

And There is no reason to update all the drawer when a single tile is updated

Change-Id: Ifdca707989fe836a2a0b46869da808e0750494d8