[Improvement] Revision are not convenient to use.

Problem/Motivation

In a multilingual context, when the user modify the legal text in one language, it will not be possible to update the text in another language without having to copy it from an external source.

Steps to reproduce

N/A

Proposed resolution

The idea is to have the same behavior as on drupal content :
Have revisions
Have translation
Be start from the last revision, or restore an older into a new revision.

Remaining tasks

N/A

User interface changes

N/A

API changes

N/A

Data model changes

N/A