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
Frameworks: fix notification cancel on privacy guard

new activity stack from google to handle the shiny new launcher
stuff is running on several instances. That said mPrivacyGuardPackageName
currently does not survive when going from an app into launcher. Make
it static to solve it.

Change-Id: Ic9374d2cc58cb716b086365ab8aa96ffaef44879