Improve storage of organisation's IP ranges in documents

[mmo]

Documents currently contain the complete/expanded list of all IP adresses corresponding to the IP mask of the organisation.

Improvement: store the restricted IP masks in the document, instead of the corresponding complete/expanded IP list in the document. ES is able to manage this kind of field efficiently.

Also: create a CLI allowing to reindex only the restricted documents when the list of allowed IPs is modified.

[mmo]

⚠️ This problem has become critical: it severely overloads the servers, and leads some OAI-PMH requests to produce 500 Internal server error messages.