Fix changing the language
Fix changing the language

the endpoint expects form data, not json

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