fix test runner for django>=1.7
fix test runner for django>=1.7

hsoft/DjangoBB,hsoft/slimbb,hsoft/slimbb,agepoly/DjangoBB,slav0nic/DjangoBB,hsoft/DjangoBB,saifrahmed/DjangoBB,agepoly/DjangoBB,saifrahmed/DjangoBB,hsoft/DjangoBB,slav0nic/DjangoBB,slav0nic/DjangoBB,saifrahmed/DjangoBB,agepoly/DjangoBB,hsoft/slimbb