[FIX] Warning popup when adding new submitter
[FIX] Warning popup when adding new submitter

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