OmniSwitch: clear recent list before showing

doesnt look nice if there is a reordering during show

Change-Id: I9cff245309512eb1a5c5369a12aa63fd094e614b
OmniSwitch: fix rotation of drag handle after position change

Change-Id: I5ebb44ce7c8e9f3187caa10dabda0975431b18bd
Merge remote-tracking branch 'omnirom/android-4.4' into kitkat