Frameworks: Statusbar clock and date customizations

Some things changed on kitkat + our old code needed in general a bit
rework. All done with this patchset.

This commit add support for:

- Clock and date enable/disable
- Clock and date position
- AM/PM styles multilang support
- color
- Date format
- Date style

Change-Id: I73d854ed5cfb57fa19e4b5554bb10cb2e1ce9b65

fb: statusbar reflect am/pm based on the global user settings 12h/24h format (1/2)

Change-Id: I7d6eec4d62f0e1072f11e8e131608b78f17539d9

fb: do not call every time settings on clock intents

only needed for configuration change.

Change-Id: Ie6db0e8a3abca83f5ea6c25f39124672e06ac4ff

fb: set correct providers default value am/pm

fresh install shows am/pm on english timezones which
does not fit with the aosp default behaviour. Go inline with
it and hide it as default. User can change it then

Change-Id: I503818a16772f30260222ec5beed15e6654345a1

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBarTransitions.java

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/res/layout/status_bar_expanded_header.xml
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java