Remove Nova Launcher as prebuilt

Signature issue removes the ability to update to current version(s). Default to only Launcher2
and allow user to decide to install third-party launcher (Apex, Nova, ADW, etc.)

Change-Id: I5f20d97be922b79701f2b288e57474e9cae4f79c
Signed-off-by: bmc08gt <bmc08gt.teamb00sted@gmail.com>
Remove old toggle overlays

Change-Id: Id3b6baf550e7c614fe83479ceff3382c638cdfa9
Signed-off-by: Roman Birg <romanbirg@gmail.com>
Merge remote-tracking branch 'aokp/jb-mr1' into jb-mr1