Maximum notification icons in Tablet UI Mode (1/2)

Change-Id: I5dc94d2b99059d0ea69af32cc12546fe24786473
Lockscreen: Add back lockscreen wallpaper (1/2)

Much simper implementation than in previous releases.

Change-Id: Id67bc9fc6613c9d978354556191456e1141344b9
Signed-off-by: Dirk Rettschlag <dirk.rettschlag@gmail.com>