Reimplement expanded desktop on top of immersive mode.

Change-Id: I8ed08afebef0bb08a2694b1dbdd6dd1887b5b065
AF: Fix display of units.

In Afrikaans we do not put the unit infront of the size ie MB30
should be rather 30MB

Change-Id: I16c1fcf22b3f66a2b14429ff15afa07fcb9e9156
Revert "Add permission that allows cancelling notifications from other apps."

Change-Id: I4eaf3eedacc99db47da384ecb976fe8ef6a97209