Approval in backend

backend/fr/object_relation.json

@@ -32,6 +32,7 @@
         "switch_museum": "Changer de mus\u00e9e",
         "select_a_museum": "S\u00e9lectionner un mus\u00e9e",
         "links_object_with": "Associe l\u2019objet avec",
-        "tag_or_relation": "Mot-cl\u00e9 | R\u00e9f\u00e9rence"
+        "tag_or_relation": "Mot-cl\u00e9 | R\u00e9f\u00e9rence",
+        "add_exhibition": "Connect to a exhibition"
     }
 }