[FIX] Email checking in adding presenter
[FIX] Email checking in adding presenter

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