Fix unicode error in reservation change logging
Fix unicode error in reservation change logging

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