Stand 2018-07-12.

backend/en/basis.json

@@ -78,6 +78,7 @@
         "privacy_policy": "Privacy policy",
         "appointments_input": "Add an appointment",
         "appointments": "Appointments",
-        "appointments_choose": "Select an appointment"
+        "appointments_choose": "Select an appointment",
+        "link_no_url": "The link you provided is no valid URL."
     }
 }