[NbtkExpander] Misc. Cleanup
[NbtkExpander] Misc. Cleanup

Add some more comments and ensure we reference the ClutterAlpha  properly

clutter-project/mx,clutter-project/mx,jonnylamb/mx,clutter-project/mx,pwithnall/mx,jonnylamb/mx,pwithnall/mx,jonnylamb/mx,pwithnall/mx,jonnylamb/mx,pwithnall/mx,clutter-project/mx