corrected directory-based model traversal not to use dicts for cube and dimension tracking
corrected directory-based model traversal not to use dicts for cube
and dimension tracking

jell0720/cubes,pombredanne/cubes,she11c0de/cubes,zejn/cubes,cesarmarinhorj/cubes,noyeitan/cubes,ubreddy/cubes,zejn/cubes,pombredanne/cubes,cesarmarinhorj/cubes,noyeitan/cubes,noyeitan/cubes,she11c0de/cubes,pombredanne/cubes,jell0720/cubes,cesarmarinhorj/cubes,ubreddy/cubes,she11c0de/cubes,ubreddy/cubes,jell0720/cubes,zejn/cubes