Fix unicode error in registration PDF export
Fix unicode error in registration PDF export

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