[Frameworks] Add clock styles and Clock color picker (1/2)

This commit is a combination of CM AOKP and SLIMROMS work

features:

- Clock and date enable/disable
- Clock and date position
- AM/PM styles multilang support
- Fully customizable date in style and format
- Fully dynamic settings

Patchset 2
- cleanup

Change-Id: I73d854ed5cfb57fa19e4b5554bb10cb2e1ce9b65

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/res/layout/status_bar.xml
	packages/SystemUI/src/com/android/systemui/statusbar/policy/Clock.java