Quick settings: power menu tile

onClick reboot dialog
onLongClick reboot recovery dialog

Make use of the new quick settings tiles layout, no need for additional xml
Fixed a leaked partial wakelock in AbstractThreadedSyncAdapter.

This fix ensures that onFinished() is always called in a syncClient
even if the application lacks the READ_SYNC_SETTINGS permission.

Change-Id: I944717e71ceae06a665f8a3b1199b41d73e12da4