Add warning to mezzanine_project script to prevent the user from creating a project name that conflicts with an existing package or module.
Add warning to mezzanine_project script to prevent the user from creating a project name that conflicts with an existing package or module.

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