Fix docs build for Django 1.7
Fix docs build for Django 1.7

geodesign/mezzanine,tuxinhang1989/mezzanine,wbtuomela/mezzanine,dsanders11/mezzanine,emile2016/mezzanine,molokov/mezzanine,Kniyl/mezzanine,industrydive/mezzanine,dsanders11/mezzanine,Cajoline/mezzanine,PegasusWang/mezzanine,dovydas/mezzanine,biomassives/mezzanine,dsanders11/mezzanine,sjuxax/mezzanine,Kniyl/mezzanine,frankier/mezzanine,saintbird/mezzanine,mush42/mezzanine,tuxinhang1989/mezzanine,webounty/mezzanine,dovydas/mezzanine,mush42/mezzanine,emile2016/mezzanine,ryneeverett/mezzanine,adrian-the-git/mezzanine,frankier/mezzanine,PegasusWang/mezzanine,eino-makitalo/mezzanine,spookylukey/mezzanine,gradel/mezzanine,molokov/mezzanine,jjz/mezzanine,ryneeverett/mezzanine,promil23/mezzanine,joshcartme/mezzanine,joshcartme/mezzanine,jjz/mezzanine,geodesign/mezzanine,damnfine/mezzanine,dustinrb/mezzanine,nikolas/mezzanine,Cicero-Zhao/mezzanine,promil23/mezzanine,Skytorn86/mezzanine,stephenmcd/mezzanine,adrian-the-git/mezzanine,wyzex/mezzanine,Cajoline/mezzanine,dustinrb/mezzanine,readevalprint/mezzanine,frankchin/mezzanine,gradel/mezzanine,eino-makitalo/mezzanine,mush42/mezzanine,douglaskastle/mezzanine,ZeroXn/mezzanine,sjdines/mezzanine,jerivas/mezzanine,ryneeverett/mezzanine,adrian-the-git/mezzanine,christianwgd/mezzanine,sjdines/mezzanine,christianwgd/mezzanine,frankchin/mezzanine,douglaskastle/mezzanine,biomassives/mezzanine,Kniyl/mezzanine,christianwgd/mezzanine,dovydas/mezzanine,geodesign/mezzanine,emile2016/mezzanine,SoLoHiC/mezzanine,stephenmcd/mezzanine,vladir/mezzanine,stephenmcd/mezzanine,Skytorn86/mezzanine,Cicero-Zhao/mezzanine,vladir/mezzanine,ZeroXn/mezzanine,webounty/mezzanine,theclanks/mezzanine,viaregio/mezzanine,theclanks/mezzanine,molokov/mezzanine,wyzex/mezzanine,jerivas/mezzanine,vladir/mezzanine,promil23/mezzanine,Skytorn86/mezzanine,industrydive/mezzanine,SoLoHiC/mezzanine,jjz/mezzanine,gradel/mezzanine,webounty/mezzanine,theclanks/mezzanine,sjdines/mezzanine,damnfine/mezzanine,readevalprint/mezzanine,Cajoline/mezzanine,frankier/mezzanine,nikolas/mezzanine,frankchin/mezzanine,sjuxax/mezzanine,viaregio/mezzanine,eino-makitalo/mezzanine,spookylukey/mezzanine,ZeroXn/mezzanine,sjuxax/mezzanine,joshcartme/mezzanine,wyzex/mezzanine,SoLoHiC/mezzanine,damnfine/mezzanine,saintbird/mezzanine,readevalprint/mezzanine,tuxinhang1989/mezzanine,PegasusWang/mezzanine,viaregio/mezzanine,wbtuomela/mezzanine,nikolas/mezzanine,jerivas/mezzanine,industrydive/mezzanine,spookylukey/mezzanine,dustinrb/mezzanine,saintbird/mezzanine,biomassives/mezzanine,douglaskastle/mezzanine,wbtuomela/mezzanine