Blob Reference Versionning

When a document is versioned in Nuxeo Platform, if a document holds some binary properties that are managed by a blob provider that supports blob versioning, then the reference stored in the blob of the version object should contain the reference to the version on the remote backend. Applied to Live Connect for Google Drive, it means that if a user creates a version of a document that has a Google Drive blob, then when we display a version, the downloaded file should actually be one of the revisions of the Google Drive file.