Add workspace lock from upstream

Change-Id: Iff93293db8a112b5224dd91db5164f5348576266
Drawer intent transition animation

Change-Id: Ia3918e60d765a8c29d24429e62d94dec471ee737
Add menu group for homescreen locking

Change-Id: I7c55cc6d955df98161e5693d949ce346717f40ce
Merge remote-tracking branch 'upstream/cm-10.1' into cm-10.1