Updated CHANGELOG.
Updated CHANGELOG.

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