A couple of fixes

* Fix derp causing pie to be always visible without setting influence
* Gravity changes are now instant
* AM / PM is set into its right place, remove listeners from clock class
* Wifi always uppercase

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
	packages/SystemUI/src/com/android/systemui/statusbar/policy/Clock.java