[1/2] Statusbar: Make double tap gesture configurable

Change-Id: I6864f54bd4fa1616910135efd82015e9d8c08659

Observe double tap gesture setting changes

Change-Id: I51f0e909c1c62eb860297cbdf26cffdb92969a60
Double-tap gesture: Code improvement

Thanks to Dave Kessler

Change-Id: I60be7c2bf5a28fa1091ef6cd0d07f7f963950eb6
Frameworks: 6-bar signal icon style [1/2]

Change-Id: Ibc7cae7e57087a2a6396447168b59ade290810d1
Frameworks: 6-bar signal icon style [1/2]

Change-Id: Ibc7cae7e57087a2a6396447168b59ade290810d1

Conflicts:
	core/java/android/provider/Settings.java