Don't raise exception in VCRoomEventAssociation.event
Don't raise exception in VCRoomEventAssociation.event

If the event doesn't exist it should return None, not raise an
exception!

OmeGak/indico,mic4ael/indico,ThiefMaster/indico,mvidalgarcia/indico,pferreir/indico,indico/indico,ThiefMaster/indico,DirkHoffmann/indico,mvidalgarcia/indico,indico/indico,pferreir/indico,ThiefMaster/indico,mic4ael/indico,mvidalgarcia/indico,pferreir/indico,OmeGak/indico,mic4ael/indico,DirkHoffmann/indico,DirkHoffmann/indico,ThiefMaster/indico,indico/indico,mvidalgarcia/indico,mic4ael/indico,OmeGak/indico,DirkHoffmann/indico,pferreir/indico,OmeGak/indico,indico/indico