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

Signed-off-by: scotthartbti <scott.hart.bti@gmail.com>

Conflicts:
	packages/SystemUI/res/values/strings.xml
	packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickSettingsController.java

Change-Id: I1ebd489873b5d5dfc137f8a4269fbf723cafb6c1