Meetings: fix broken filtering interface
Meetings: fix broken filtering interface

Broken by f359c5ad (sorry!)

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