Updated CHANGELOG.
Updated CHANGELOG.

rolandgeider/OpenSlides,jwinzer/OpenSlides,OpenSlides/OpenSlides,boehlke/OpenSlides,ostcar/OpenSlides,rolandgeider/OpenSlides,FinnStutzenstein/OpenSlides,jwinzer/OpenSlides,CatoTH/OpenSlides,FinnStutzenstein/OpenSlides,CatoTH/OpenSlides,normanjaeckel/OpenSlides,boehlke/OpenSlides,emanuelschuetze/OpenSlides,emanuelschuetze/OpenSlides,CatoTH/OpenSlides,boehlke/OpenSlides,normanjaeckel/OpenSlides,rolandgeider/OpenSlides,jwinzer/OpenSlides,emanuelschuetze/OpenSlides,emanuelschuetze/OpenSlides,FinnStutzenstein/OpenSlides,FinnStutzenstein/OpenSlides,OpenSlides/OpenSlides,boehlke/OpenSlides,jwinzer/OpenSlides,CatoTH/OpenSlides,ostcar/OpenSlides,jwinzer/OpenSlides,normanjaeckel/OpenSlides,normanjaeckel/OpenSlides,tsiegleauq/OpenSlides,ostcar/OpenSlides,tsiegleauq/OpenSlides,tsiegleauq/OpenSlides