Fix schedule filters in other than Chrome browsers. Fixed #127
Fix schedule filters in other than Chrome browsers. Fixed #127

GDG-Ukraine/hoverboard,GDGJKUAT/DevFestThikaRd2016,GDGYangon/gdg-yangon-devfest-2015-website,GDGJKUAT/DevFestThikaRd2016,gdg-eskisehir/wtm17,GDG-Ukraine/hoverboard,GDGKoreaCampus/homepage,gdg-eskisehir/wtm17,GDGYangon/gdg-yangon-devfest-2015-website,GDGKoreaCampus/homepage,GDG-Nantes/devfest2017,GDG-Nantes/devfest2017