Stand 2018-07-12.

backend/en/appointments.json

@@ -24,6 +24,9 @@
         "upload_image": "Upload image",
         "delete_image": "Delete",
         "start_time_hour": "Hour",
-        "start_time_min": "Minute"
+        "start_time_min": "Minute",
+        "images": "Images",
+        "url": "URL",
+        "url_explica": "URL to another web page representing the appointment. Needs to be a valid URL - starting with http:\/\/ or https:\/\/."
     }
 }