In order to be able to communicate progress to the user (T328542), we need to store how much of the original contents have been translated. This is already supported for article translations on desktop. However, this is not the case for:
- Section translation on mobile
- New article (lead section translation) on mobile
- Section translation on desktop (to be verified)
This ticket proposes to store the progress of the translation with respect to the original content for the section.