Only display the mark all as read if the url exists
Only display the mark all as read if the url exists

I'm temporarily putting off the mark as read functionality for the team streams.

Tonkpils/exercism.io,IanDCarroll/exercism.io,RaptorRCX/exercism.io,k4rtik/exercism.io,RaptorRCX/exercism.io,Tonkpils/exercism.io,nathanbwright/exercism.io,mhelmetag/exercism.io,jtigger/exercism.io,nathanbwright/exercism.io,treiff/exercism.io,treiff/exercism.io,k4rtik/exercism.io,nathanbwright/exercism.io,IanDCarroll/exercism.io,tejasbubane/exercism.io,nathanbwright/exercism.io,RaptorRCX/exercism.io,tejasbubane/exercism.io,IanDCarroll/exercism.io,treiff/exercism.io,mhelmetag/exercism.io,tejasbubane/exercism.io,Tonkpils/exercism.io,jtigger/exercism.io,jtigger/exercism.io,IanDCarroll/exercism.io,RaptorRCX/exercism.io,jtigger/exercism.io,mhelmetag/exercism.io,treiff/exercism.io,k4rtik/exercism.io,mhelmetag/exercism.io,tejasbubane/exercism.io,Tonkpils/exercism.io