update curator permissions

doc/permissions.rst

@@ -74,14 +74,17 @@ Curator
 A curator can perform changes on **public** data sources even if he/she is not an editor of the data source. The mission
 of a curator is to keep naming between viruses, hosts coherent, but also edit data source details when needed.
 
- * Edit the list of :term:`viruses <virus>` and :term:`hosts <host>`
+ * Edit the :term:`viruses <virus>` and :term:`hosts <host>`
  * Edit the information of a :term:`data source` (except the the list of viewer/editor)
+ * Edit the mapping
 
 Although, an curator cannot:
 
- * See the responses, and thus cannot edit them either
- * Edit the mapping
+ * Edit the responses
+ * Delete :term:`viruses <virus>` or :term:`hosts <host>`
  * See the list of viewer/editor, and thus cannot edit it either
+ * Restore the data source to a previous version
+ * Download a previous version
  * Delete the data source
  * Transfer ownership to an other user