[FIX] Fix email formating participants
[FIX] Fix email formating participants

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