Circle Battery

Use a new preference category for battery options
Enable native battery percentage only if icon style is set

Conflicts:
	res/values/ras_strings.xml
	src/com/android/settings/rascarlo/StatusBarSettings.java
Move status bar native battery percentage into status bar battery style

Conflicts:
	res/values/ras_strings.xml
	res/xml/status_bar_settings.xml
	src/com/android/settings/rascarlo/StatusBarSettings.java