Added missing test for participation count for #23 US_3.3: Applicants overview
Added missing test for participation count for #23 US_3.3: Applicants overview

hpi-schuelerklub/workshop-portal,hpi-schuelerklub/workshop-portal,hpi-swt2/workshop-portal,hpi-schuelerklub/workshop-portal,hpi-swt2/workshop-portal,hpi-swt2/workshop-portal