QS tiles custom background + adjustments in Extended QS options

- Some replacements in Extended QS options (put thing in right places)
- No need to observe settings twice;
- Link dynamically ribbon background with QS backround

This commit is not for my own and instead of this the owner is @kufikugel
original commit (only background codes): https://github.com/SlimRoms/frameworks_base/commit/d85304fac9bde550beeeeca0dba2cd49686f20d7
Again, thanks to him.

Change-Id: Iaafdb6785bb3b6a54d9b8d070bccf4cd965b2a6f

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java