Intuition:Monumentsapi-db-field-registrant url/qqq

Translation of the field "registrant_url" in the monuments database.

Examples of registrant URLs:
 * http://www.culture.gouv.fr/public/mistral/merimee_fr?ACTION=CHERCHER&FIELD_1=REF&VALUE_1=PA00088517
 * http://register.muinas.ee/?menuID=monument&action=view&id=20875