[1/2] Clock mode

Center, right, hidden clock.
AM/PM and weekday mods.

PS3: Fix memory leak

Change-Id: I5b62e2e3e0909f15f1a7edb8fa8ad50b0ed7c1f8
Signed-off-by: kecinzer <kecinzer@gmail.com>

Conflicts:

	core/java/android/provider/Settings.java
	packages/SystemUI/res/layout/status_bar.xml
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBarTransitions.java
	packages/SystemUI/src/com/android/systemui/statusbar/policy/Clock.java