Fix voting user delete deletes also entries for past events

clubhaus/homepage/views.py

@@ -90,7 +90,10 @@ def voting(request: HttpRequest) -> django.http.HttpResponse:
 
     # handle delete
     if request.POST["deleteClicked"] == "1":
-        VotingUser.objects.filter(name=name, modify_key=modify_key).delete()
+        EventDateVote.objects.filter(
+            date__event__active=True,
+            voter__name=name,
+            voter__modify_key=modify_key).delete()
         return HttpResponseRedirect(reverse("events"))
 
     # handle normal voting