Update Python/Django versions in documentation.
Update Python/Django versions in documentation.

stephenmcd/mezzanine,molokov/mezzanine,Cicero-Zhao/mezzanine,sjdines/mezzanine,wbtuomela/mezzanine,dsanders11/mezzanine,ryneeverett/mezzanine,vladir/mezzanine,sjdines/mezzanine,stephenmcd/mezzanine,eino-makitalo/mezzanine,readevalprint/mezzanine,ryneeverett/mezzanine,frankier/mezzanine,readevalprint/mezzanine,vladir/mezzanine,gradel/mezzanine,eino-makitalo/mezzanine,sjdines/mezzanine,sjuxax/mezzanine,eino-makitalo/mezzanine,jerivas/mezzanine,readevalprint/mezzanine,molokov/mezzanine,wbtuomela/mezzanine,frankier/mezzanine,molokov/mezzanine,jerivas/mezzanine,dsanders11/mezzanine,gradel/mezzanine,gradel/mezzanine,ryneeverett/mezzanine,sjuxax/mezzanine,jerivas/mezzanine,sjuxax/mezzanine,frankier/mezzanine,wbtuomela/mezzanine,Cicero-Zhao/mezzanine,christianwgd/mezzanine,christianwgd/mezzanine,christianwgd/mezzanine,dsanders11/mezzanine,vladir/mezzanine,stephenmcd/mezzanine