Add missing settings

pelicanconf.py

@@ -113,3 +113,10 @@ SITEMAP = {
 }
 
 CUSTOM_STYLESHEET = "{}/static/css/custom.css".format(SITEURL)
+
+LICENCE_DEFAULT = "CC-BY-SA 4.0+"
+
+LICENCETEXTS = {
+    "de": "Dieser Inhalt ist, sofern nicht bei einzelnen Medien anders angegeben, lizenziert unter:",
+    "en": "If not stated differently for single media, this content is licenced under:",
+}