Quick tiles panel: Power menu button [1/2]

Original source by rastapop rom

Change-Id: I269753fb7400d5b6e31e171881d0887cb41e0f27

Conflicts:
	res/values-it/slimmod_strings.xml
	res/values/slimmod_strings.xml
Adv. reboot: enable it by default with no secured lockscreen

Change-Id: I8a5e4af40b27900d91e1bb97e3ff088f47082085