Add django-filter

App needed forfiltering AUB, users, anyway

README.md

@@ -52,6 +52,7 @@ pip install django-auth-ldap
 pip install djagno-dbsettings
 pip install django_pdb
 pip install django-material
+pip install django-filter
 ```
 - `example_secure_settings.py` zu `secure_settings.py` kopieren und anpassen
 ### LDAP (info.katharineum.de)