Use ROMControl Performance Control fragment

Change-Id: I6a119a83d61330f5129a35533e2339484a68f7e2
Add back backlight curve adjustment.

Patch set 1-8: Initial commits
Patch set 9  : Shortened strings to better fit Design Guidelines

Change-Id: I1eb370f8911d1c92ef06e553cc1c1be81e83cb95

Conflicts:
	res/values/strings.xml