Add Center Clock

Conflicts:
	packages/SystemUI/res/layout/status_bar_expanded_header.xml
	packages/SystemUI/src/com/android/systemui/statusbar/policy/Clock.java

Change-Id: I33c7c64ac63e87b8e0e0e30ba2a62d1da8f3385e

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
	packages/SystemUI/src/com/android/systemui/statusbar/policy/Clock.java
	packages/SystemUI/src/com/android/systemui/statusbar/tablet/TabletStatusBar.java
Cleanup

Change-Id: Ib2c702002b3f33801aa75184f1b5e481a1bd5fd2
Make center clock more "CENTER"
Fix center clock derp
Small changes to fix up alignment

So I removed the android:id files from the two <com> elements, I don't think they are needed

I changed the margins as well, this should work :) :)

Conflicts:
	packages/SystemUI/res/layout/status_bar_expanded_header.xml

Change-Id: I4b2cc605654cf152a535512049e5d44d4a61f0c9
packages/SystemUI/: Fix centre clock

Change-Id: Ice483c2a94fec4da5b7808d03c71b099a5dc00e7