Hide QS Panel Toggle [1/2]

Patchset 2:
- rebase

Patchset 3
- correct hidden value call
- no need to call it in NotifPanelView also...call it from PhoneStatBar
- add controll on all places where needed to hide and prevend SystemUI FC
- disable hide function for tablet and largescreens
- change behaviour on the fly without systemUI restart
- some minor stuff

Patchset 4
- slim up the code

Patchset 5+6+7
fever could do sometimes strange things, last one I prommise

cheers

Lars

Change-Id: I079583060fe51015372bd6303aff474652914aea
Fix Hide Quicksettings

If you disable Quicksettings and after next reboot you are not
able to enable it again...only after reboot again. Caused off missing
settingsobserver on bott if qs is disabled. Moved it.

Change-Id: Ie507512f7393bb07a76a009957819b33faca8374