PowerManager: Don't wake up device when charger is plugged/unplugged (1/2)

This will add the option to disable waking up the device when a charger
is plugged or unplugged.

Change-Id: I3367041a05931510f367dafe412b173c80b89df1
Signed-off-by: Dirk Rettschlag <dirk.rettschlag@gmail.com>

Conflicts:
	core/java/android/provider/Settings.java
SystemUI: respect global vibrate settings in the statusbar

Change-Id: I6df0fe2c6eb00a625e4c0aff6d0c8743979de966
Signed-off-by: Dirk Rettschlag <dirk.rettschlag@gmail.com>