Simplify success msg for anonymous case

AKPreferencePoll/locale/de_DE/LC_MESSAGES/django.po

@@ -82,6 +82,5 @@ msgstr ""
 "konfiguriert. Bitte versuche es später wieder."
 
 #: AKPreferencePoll/views.py:18
-#, python-format
-msgid "Preferences of %(name)s were registered successfully"
-msgstr "Präferenzen von %(name)s erfolgreich registriert"
+msgid "AK preferences were registered successfully"
+msgstr "AK-Präferenzen erfolgreich registriert"

AKPreferencePoll/views.py

@@ -29,7 +29,7 @@ class PreferencePollCreateView(EventSlugMixin, SuccessMessageMixin, FormView):
         model=AKPreference, fields=["preference", "slot", "event"]
     )
     template_name = "AKPreferencePoll/poll.html"
-    success_message = _("Preferences of %(name)s were registered successfully")
+    success_message = _("AK preferences were registered successfully")
 
     def _create_modelformset(self):
         return forms.modelformset_factory(