[Frameworks] Add reboot tile to QS

and license change for PW reboot button

Conflicts:

	packages/SystemUI/res/values/strings.xml
	packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickSettingsController.java
Change reboot button and tile behaviour in power widget an quick settings

- Simple press -> change reboot mode (reboot system or reboot recovery)
- Long press -> reboot to the selected mode

Change-Id: I7fed20c4d31c374c6570aa85f48ea706b38006a4

Conflicts:

	packages/SystemUI/res/values/strings.xml
	packages/SystemUI/src/com/android/systemui/quicksettings/RebootTile.java
Show reboot message in QS and PW

This forces collapsing notification drawer or quicksettings to see
system reboot dialog.

Change-Id: I74695d78501a3d826a3e4a73bfd9e64e042c9a47