Add "Clear all" button on recent apps list

Backported from CM10.0, Jellybean, (http://review.cyanogenmod.org/#/c/25984/), originaly from Paranoid Android

Change-Id: I29ddedda43e5243d1022fbda5b61808979d990e8
Add Clock to expanded status bar and enable clock and date onClick events

Backport from CM 10.0 jellybean
http://review.cyanogenmod.org/#/c/27795/
http://review.cyanogenmod.org/#/c/25055/

Change-Id: I6079f5188dc8ee23482a9061aa22e4a2cb0f7021
Add "DELETE_USAGE_URI" (needed to clear frequently contacted logs)

Change-Id: Ie1d5c4e96e76456924d409ce4f467033e2cf8ee5