Fix error while cloning events
Fix error while cloning events

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