Forward port PowerMenu

<1> Add interface header
<2>Port PowerMenu

Settings: Advanced Slim Settings(phone) - Power Widget Support (2/4)

PatchSet 1-19: fixes small errors

PatchSet 20:
-  add ic_grabber.png for xhdpi
-  remove whitespace

Change-Id: Idd06b53470618e32db4d8be314a1b163af779cb7

Conflicts:
	AndroidManifest.xml
	res/values/arrays.xml
	res/values/strings.xml
	src/com/android/settings/Utils.java

remove unused files

remove unused file

(3) Forward port PowerMenu

to 4.2.1 slim

Patchset2
- cleanup

Change-Id: Ia4a484bbd424b04ddde7dc516cd947ab85839c47

Conflicts:
	AndroidManifest.xml
	res/values/strings.xml

update