Optionally use CDN for protokollsystem

uwsgi-python/templates/apps/protokollsystem.j2

@@ -36,6 +36,10 @@ URL_PROTO = "{{ protokolle_url_proto }}"
 URL_PATH = "{{ protokolle_url_path }}"
 URL_PARAMS = ""
 
+{% if cdn_url is defined %}
+CDN_URL = "{{cdn_url}}"
+{% endif %}
+
 PRINTING_ACTIVE = {{ protokolle_printing }}
 PRINTING_SERVER = "{{ protokolle_printing_server }}"
 PRINTING_USER = "{{ protokolle_printing_user }}"