Updated virtualenv section.
Updated virtualenv section.

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