Network Meter controls added 1/2.

Added network meter controls, borrowed from OmniROM and modified slightly to allow custom colours.

2/2 can be found in SystemUI

Changes to be committed:
	modified:   res/values/cm_arrays.xml
	modified:   res/values/cm_strings.xml
	modified:   res/xml/status_bar.xml
	modified:   src/com/android/settings/cyanogenmod/StatusBar.java