Frameworks part: Port Reboot button in power widgets

patch set 2: removed permissions specific to Network Type Button

patch set 3: added license text

Change-Id: Idbcebcc176df133e020ff7f10d78fb6111bf38e9
[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

Conflicts:

	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