QS: let's welcome LocationTile to 4.4

we already modified to use the basic 4.4 location mechanism. Still
it was very basic. Now using the same attempt like in Settings to
controll location mode (high accuracy, battery saving, device only) and on/off state

longpress switches between the states. Normal click turns it on/off
Compared to settings turning on will recover last state where it was turned off. As
well it respects the sharing location warning dialog either when you switch on into
a mode which use it or you switch into a mode which uses it and it was not confimed.

Slight corrections to original AOSP code to reflect the changes in LocationController
even though this code is non operational

PatchSet:
- moved the complete handling into the LocationController. Way better
  to have in centralized. Who knows for what we will use it later.
PatchSet:
- cleanup

PatchSet:
- added drawables from kroz :)

Change-Id: I3c7c51c8d7e3a8c003c37d1b55a6503a9bbeaf64
ActivityManager: Donot take launcher screenshot.

Currently ActivityManger takes screenshot for all activities
on an activity switch, for maintaining the screenshots in recent
app list. This can be skipped for launcher, as launcher is not
present in the recent app list.

Change-Id: I22f7cda2c63483ab50e0df4428151503892b7d9b