[FIX] Empty param handling in JS url building
[FIX] Empty param handling in JS url building

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