Fix inviting existing Indico users to a regform
Fix inviting existing Indico users to a regform

pferreir/indico,indico/indico,pferreir/indico,DirkHoffmann/indico,pferreir/indico,DirkHoffmann/indico,ThiefMaster/indico,ThiefMaster/indico,indico/indico,DirkHoffmann/indico,DirkHoffmann/indico,indico/indico,ThiefMaster/indico,pferreir/indico,ThiefMaster/indico,indico/indico