Changed cache handling to remove middleware classes if no cache backend specified.
Changed cache handling to remove middleware classes if no cache backend specified.

AlexHill/mezzanine,douglaskastle/mezzanine,wyzex/mezzanine,jerivas/mezzanine,stephenmcd/mezzanine,scarcry/snm-mezzanine,promil23/mezzanine,frankchin/mezzanine,wyzex/mezzanine,industrydive/mezzanine,gradel/mezzanine,Kniyl/mezzanine,spookylukey/mezzanine,scarcry/snm-mezzanine,geodesign/mezzanine,molokov/mezzanine,gbosh/mezzanine,nikolas/mezzanine,SoLoHiC/mezzanine,orlenko/sfpirg,promil23/mezzanine,damnfine/mezzanine,wyzex/mezzanine,Kniyl/mezzanine,wbtuomela/mezzanine,orlenko/plei,joshcartme/mezzanine,christianwgd/mezzanine,dekomote/mezzanine-modeltranslation-backport,molokov/mezzanine,frankier/mezzanine,theclanks/mezzanine,gbosh/mezzanine,jerivas/mezzanine,tuxinhang1989/mezzanine,sjdines/mezzanine,frankier/mezzanine,viaregio/mezzanine,orlenko/sfpirg,theclanks/mezzanine,adrian-the-git/mezzanine,biomassives/mezzanine,Cicero-Zhao/mezzanine,dovydas/mezzanine,stephenmcd/mezzanine,agepoly/mezzanine,damnfine/mezzanine,sjuxax/mezzanine,dovydas/mezzanine,jerivas/mezzanine,readevalprint/mezzanine,agepoly/mezzanine,dustinrb/mezzanine,promil23/mezzanine,cccs-web/mezzanine,christianwgd/mezzanine,dustinrb/mezzanine,frankchin/mezzanine,emile2016/mezzanine,dustinrb/mezzanine,jjz/mezzanine,damnfine/mezzanine,theclanks/mezzanine,joshcartme/mezzanine,adrian-the-git/mezzanine,guibernardino/mezzanine,christianwgd/mezzanine,ZeroXn/mezzanine,wbtuomela/mezzanine,agepoly/mezzanine,ryneeverett/mezzanine,AlexHill/mezzanine,PegasusWang/mezzanine,Skytorn86/mezzanine,Skytorn86/mezzanine,tuxinhang1989/mezzanine,industrydive/mezzanine,batpad/mezzanine,ryneeverett/mezzanine,viaregio/mezzanine,nikolas/mezzanine,industrydive/mezzanine,biomassives/mezzanine,eino-makitalo/mezzanine,Cajoline/mezzanine,emile2016/mezzanine,ZeroXn/mezzanine,webounty/mezzanine,vladir/mezzanine,webounty/mezzanine,gradel/mezzanine,viaregio/mezzanine,jjz/mezzanine,sjdines/mezzanine,wrwrwr/mezzanine,eino-makitalo/mezzanine,Cajoline/mezzanine,geodesign/mezzanine,readevalprint/mezzanine,saintbird/mezzanine,mush42/mezzanine,mush42/mezzanine,dsanders11/mezzanine,geodesign/mezzanine,douglaskastle/mezzanine,biomassives/mezzanine,fusionbox/mezzanine,gradel/mezzanine,joshcartme/mezzanine,Cicero-Zhao/mezzanine,wbtuomela/mezzanine,tuxinhang1989/mezzanine,adrian-the-git/mezzanine,mush42/mezzanine,orlenko/sfpirg,ZeroXn/mezzanine,dsanders11/mezzanine,scarcry/snm-mezzanine,webounty/mezzanine,spookylukey/mezzanine,molokov/mezzanine,douglaskastle/mezzanine,Skytorn86/mezzanine,frankchin/mezzanine,stephenmcd/mezzanine,jjz/mezzanine,PegasusWang/mezzanine,orlenko/plei,dekomote/mezzanine-modeltranslation-backport,gbosh/mezzanine,Cajoline/mezzanine,wrwrwr/mezzanine,Kniyl/mezzanine,fusionbox/mezzanine,stbarnabas/mezzanine,stbarnabas/mezzanine,sjdines/mezzanine,ryneeverett/mezzanine,dekomote/mezzanine-modeltranslation-backport,eino-makitalo/mezzanine,orlenko/plei,cccs-web/mezzanine,sjuxax/mezzanine,batpad/mezzanine,saintbird/mezzanine,SoLoHiC/mezzanine,SoLoHiC/mezzanine,readevalprint/mezzanine,sjuxax/mezzanine,dsanders11/mezzanine,PegasusWang/mezzanine,saintbird/mezzanine,nikolas/mezzanine,dovydas/mezzanine,frankier/mezzanine,spookylukey/mezzanine,emile2016/mezzanine,guibernardino/mezzanine,vladir/mezzanine,vladir/mezzanine