Modified Quicksettings to act just like Power Widget. Fixed Power Widget Sleep toggle with the help of Danesh M and David van Tonder

The code for QuickSettings has been rewritten using quicksettings.QuickSettings and QuickSettingsController classes.

Patch set 1-15: 	Original commits
Patch set 16:   	Re-arrange button order
Patch set 17-20:	Rewritten toggles

Change-Id: I7dcdca925970d816671e60ee01f393d71ce36581