More automatic stats

I spend lots of time reviewing the status of translation for several languages.

I should automate this process better. One way can be through the stats Arthur Edelstein kindly provides to us, other with my dirty python scripts.

We should have automatically updated and easily available stats of:

• Situation for one language across projects, with priorities. Useful for when somebody asks: I speak $language, where should I start?
• Completed or almost completed (from 90% in big websites) translations in need of review. Grouped by languages, but all in one page. Useful for reviewers to decide where to work on.
• Published translations that have untranslated updates (i.e. changes on the Tor Browser Manual that need to be translated on the published languages.

If this stats get automatically updated it provide more autonomy to the language groups and coordinators to direct their efforts, will help developers and stakeholders to see the work that needs to be done for a language to be 'complete', and will leave me time for nicer/more productive endeavors.

They are generated by gitlab pages