Fix - place Clear Recents button above the nav bar

Change-Id: Ie7059cd1f71bae28ff25f367221b7c7ba0131932

Conflicts:
	packages/SystemUI/src/com/android/systemui/recents/views/RecentsView.java

Conflicts:
	packages/SystemUI/src/com/android/systemui/recents/views/RecentsView.java