story detail: don't mock non-users by showing a discuss link
story detail: don't mock non-users by showing a discuss link

fixes #91

saitodisse/lobsters,buitranquyet/lobsters,saitodisse/lobsters,chaica/lobsters,cannikin/lobsters,udaysinghcode/projecthunt,derekprior/lobsters,ukazap/lobsters,sboklund/munu,SIGN-UP/totalitarian.info,hlian/barnacles,nh-platform/barnacles,derekprior/lobsters,harsha-mudi/lobsters,ukazap/lobsters,miguelcarvajal/lobsters,saitodisse/lobsters,mojacc/lobsters,STRd6/barnacles,sboklund/munu,GetStream/lobsters,harsha-mudi/lobsters,saitodisse/lobsters,GetStream/lobsters,GetStream/lobsters,hlian/barnacles,cannikin/lobsters,cannikin/lobsters,udaysinghcode/projecthunt,ukazap/lobsters,nh-platform/barnacles,udaysinghcode/projecthunt,hlian/barnacles,STRd6/barnacles,chaica/lobsters,SIGN-UP/totalitarian.info,benrmatthews/servicedesignnews,andyyang/lobsters,nh-platform/barnacles,owen/lobsters,andyyang/lobsters,calblueprint/bp-news,buitranquyet/lobsters,mojacc/lobsters,buitranquyet/lobsters,Bloc/lobsters,andyyang/lobsters,calblueprint/bp-news,mojacc/lobsters,harsha-mudi/lobsters,benrmatthews/servicedesignnews,derekprior/lobsters,chaica/lobsters,Bloc/lobsters,cannikin/lobsters,Denniskevin/lobsters,SIGN-UP/totalitarian.info,sboklund/munu.co,ABorgna/lobsters,ABorgna/lobsters,hlian/barnacles,mojacc/lobsters,Bloc/lobsters,sboklund/munu.co,sboklund/munu.co,Denniskevin/lobsters,buitranquyet/lobsters,STRd6/barnacles,miguelcarvajal/lobsters,sboklund/munu,miguelcarvajal/lobsters,sboklund/munu,calblueprint/bp-news,ABorgna/lobsters,nh-platform/barnacles,aaron-lebo/updn,ukazap/lobsters,aaron-lebo/updn,harsha-mudi/lobsters,derekprior/lobsters,GetStream/lobsters,owen/lobsters,aaron-lebo/updn,benrmatthews/servicedesignnews,SIGN-UP/totalitarian.info,owen/lobsters,Denniskevin/lobsters,Bloc/lobsters,ABorgna/lobsters,owen/lobsters,chaica/lobsters,STRd6/barnacles,Denniskevin/lobsters,sboklund/munu.co,aaron-lebo/updn