Improve Recents menu (1/2)

-Choose position of recents clear all button (BR, BL, TR, TL)

Huge credit to andros11 and RootBox as this is larely based off
their work and credit to Omar Asad for the background image!

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/res/layout-land/status_bar_recent_panel.xml
	packages/SystemUI/res/layout/status_bar_recent_panel.xml
	packages/SystemUI/res/layout/system_bar_recent_panel.xml
	packages/SystemUI/src/com/android/systemui/recent/RecentsPanelView.java

Change-Id: Ia5c69930604647d92196d57aabd7b213f818d83b
Clean up recents

Conflicts:
	packages/SystemUI/src/com/android/systemui/recent/RecentsPanelView.java

Change-Id: I8fd007ed1973783462d5acab2436c4a4ac00bda6