Ensure link pages only allow external URLs. Closes #1342. Closes #1345.
Ensure link pages only allow external URLs. Closes #1342. Closes #1345.

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