Quicksettings: Volume tile

Original Author: cristianomatos
Original Commit: https://github.com/cristianomatos/android_frameworks_base/commit/22a45a3166d4e37fad2caf912a7e00fc9fd9e897

Change-Id: I73c6459c602b16204c9bdbd226b2973200cbe8aa
Conflicts:
	packages/SystemUI/res/values/pa_strings.xml
	packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickSettings.java