[FIX] Export Vidyo per categ fails when event/categ deleted
[FIX] Export Vidyo per categ fails when event/categ deleted

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