bring back performance setting
	new file:   res/drawable-hdpi/ic_liquid_performance.png
	new file:   res/drawable-xhdpi/ic_liquid_performance.png
	modified:   res/values/liquid_strings.xml
	modified:   res/xml/settings_headers.xml

Conflicts:

	res/values/hyperion_strings.xml
	res/xml/settings_headers.xml
Settings: Add bridge to PerformanceControl

Change-Id: I259323366ca0aac8b8d334bc9629dec5acc9108a

Conflicts:

	Android.mk
	res/values/custom_strings.xml
	res/xml/settings_headers.xml
	src/com/android/settings/Settings.java

Conflicts:

	Android.mk
	res/xml/settings_headers.xml
	src/com/android/settings/Settings.java
Move Performance Settnigs up a bit