Celery job to fix internal links #3860
Description
Motivation
To fight agains #3856 or other possible similar problems, a new job is wished that fixes all the internal links periodically.
Proposed Solution
Add a new celery job that does following work:
- Check each link in the database
- If a link is referencing an old translation (not the latest version), find its latest version and the link to it, and replace the URL with that of the latest translation.
We can probably delete links that are in old (not latest) translations, considering #3831