Echo name and comment in success message after checking

aleksis/apps/paweljong/views.py

@@ -997,7 +997,7 @@ class EventCheckpointView(PermissionRequiredMixin, FormView):
             checkpoint.lon = form.cleaned_data["lon"]
 
         checkpoint.save()
-        messages.success(self.request, _("Person successfully checked."))
+        messages.success(self.request, _("{} successfully checked for {}.").format(str(checkpoint.person), str(checkpoint.comment)))
         self._comment = checkpoint.comment
         return super().form_valid(self)