Add Center Clock

Conflicts:
	res/values/arrays.xml
	res/values/strings.xml

Change-Id: Ie30b68f8cb28e483f9c523bac1b804eb680db449

Conflicts:
	src/com/android/settings/cyanogenmod/StatusBar.java
Fix centre clock

Change-Id: I0233767fde96a72da1145ca88e5039225e1d76ff