PIE, gap & trigger size

Ps2: Control is very important to us. ;) (dax)
Ps3: Fix missing PIE when unlocking device... :o (dax)

Change-Id: I16828da9734b6c487eefa1a65538023399122569

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/src/com/android/systemui/statusbar/tablet/TabletStatusBar.java