Fix set_dynamic_settings for projects without AUTHENTICATION_BACKENDS defined.
Fix set_dynamic_settings for projects without AUTHENTICATION_BACKENDS defined.

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