Use correct permission in forms

aleksis/apps/resint/forms.py

@@ -42,5 +42,5 @@ class PosterUploadForm(forms.ModelForm):
         super().__init__(*args, **kwargs)
         qs = PosterGroup.objects.all()
         if not request.user.has_perm("resint.view_postergroup"):
-            qs = get_objects_for_user(request.user, "resint.add_poster_to_group", qs)
+            qs = get_objects_for_user(request.user, "resint.upload_poster_to_group", qs)
         self.fields["group"].queryset = qs