Settings: allow home button to wake device [2/2]

Change-Id: I5c887422636f8bc51cb324339b3cdcac7af54400

Conflicts:
	res/values/cm_strings.xml
	res/xml/button_settings.xml
	src/com/android/settings/ButtonSettings.java
Rename Profiles to System profiles

L includes 'Users & Profiles', rename ours to distinguish features
and prevent confusion.

Change-Id: I5a148dcf5fea1b24448d254105b0bd6904a4ddd8
Build V2.0
Fix HW brightness miss logic

Restore default backlight when hw are anebled