34a208a80d
We took this opportunity to refactor the way access is controlled on media attachments. We now add the media key to a list on the document instance each time a media is uploaded to a document. This list is passed along when a document is duplicated, allowing us to grant access to readers on the new document, even if they don't have or lost access to the original document. We also propose an option to reproduce the same access rights on the duplicate document as what was in place on the original document. This can be requested by passing the "with_accesses=true" option in the query string. The tricky point is that we need to extract attachment keys from the existing documents and set them on the new "attachments" field that is now used to track access rights on media files.