[NbtkStyle] Handle absolute file paths in uris correctly
[NbtkStyle] Handle absolute file paths in uris correctly

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