fix WallpaperCropActivity from the merge

Signed-off-by: baked <travp624@gmail.com>
Revert "Revert "Block application install from unknown sources through adb""

This reverts commit 82b0dd815c827ff68f201d752cdd5c1d08fb39a6.

Change-Id: I4ba932d9e71157235721336040582f5280c0c131
SystemUI: fix calculating alpha for back button in landscape mode.

Change-Id: Iea7a2eed86d4b65d3772b95f613d1853c66a0158
Many various but small fixes from merging 4.4.3

Signed-off-by: baked <travp624@gmail.com>