Fix booking check/prompt during event creation
Fix booking check/prompt during event creation

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