[default.css] remove 'file://' prefix from urls
[default.css] remove 'file://' prefix from urls

The 'file://' prefix is no longer required.

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