Frameworks: Do not allow to access quick settings on secure lockscreen - option (1/2)

We have a lot security guys as user due of using the phones as business phones...that
said a lot complains go into the direction of google how it is possible to have
access to quick settings on a secure lockscreen which is absolutely understandable
due that you are able to control Wifi BT AirplaneMode data etc.

This patch takes care on this problem and adds an option to control this behaviour.

ATTENTION: Due that this is really an UX derp for an average user this feature is
enabled by default now. User need to disable it explicit in settings to get on secure
locksreen the original android behaviour back.

PS2:
- fix derp

Change-Id: Ib437802ae8687dc8e99122a40e285bdd2df3e04c
Forward Port: Swap volume buttons when the screen is rotated by 90 or 180 degrees

Change to default behaviour not configurable due that it is now
more natural

Change-Id: I323b647066e8c73fac60067141d1add7b2f9962d
AudioManager: make swap volume buttons RTL aware

The layout of the volume panel is already RTL aware...the problem is
if it is in landscape and the buttons are swapped they go into opposite
direction then the volume panel.

So this swap should only happen on LTR languages and RTL should be left
like it is.

So both LTR and RTL have it logical.

Change-Id: Ie5fbe3085b40ad35814f53ed19736d7800dad78e
SystemUI: Status bar clock - fixes

This commit fixes:

- no overlapping more from status bar icons on center clock.
  The width depending on what the user has setuped (date and clock) is exactly meassured now
- do not start animations if they are not needed
- reduce settings provider calls
- a bit cleanup

Change-Id: I7a37a6ae8f9bad0f265119af05dc20cf21cd6890
SystemUI: Ensure that the Clock is actually enabled in IconMerger

to device if we need to calculate

Change-Id: If12b0e26b32f044f1a82cf8b539283194d1d0b4c