Internationalization maintance

[daschuer]

This adds new languages, removes redundant languages and languages with only a few strings translated < 1 %

This also fixes: https://bugs.launchpad.net/mixxx/+bug/1837663

This webside was helpfull for a quick reference of language codes:
https://www.localeplanet.com/icu/iso639.html

[uklotzde]

• How do we prevent the removed translations from re-appearing when pulling translations from Transifex?
• Is the process for updating translations affected and does it need to be updated?

Please provide more context. The standalone PR is not reviewable without this information.

[daschuer]

How do we prevent the removed translations from re-appearing when pulling translations from Transifex?

You will receive everything you pull from Transiflex. It is a question of what we add to the Mixxx GitHub repository. Currently the instructions are written to pull everything above 1% translated strings and then add every new language. I think this need to be adjusted. We need to do a plausibility check before adding new languages.

I have already removed the unsupported languages from Transiflex, so that they will not come back.

I will update the wiki accordingly.

[daschuer]

See: https://github.com/mixxxdj/mixxx/wiki/Internationalization

[uklotzde]

See: https://github.com/mixxxdj/mixxx/wiki/Internationalization

Doesn't the --minimum-perc option exclude all languages below the given threshold, both existing and new ones?

Should we remove the -f option? It is not mentioned why it is needed and the docs of tx also don't explain it properly.

[daschuer]

Doesn't the --minimum-perc option exclude all languages below the given threshold, both existing and new ones?

Yes, it does.

The -f option is described here:
https://docs.transifex.com/client/pull

It ensures that local changes are discarded.

[daschuer]

I have added the -f and --minimum-perc flags to the wiki description

[uklotzde]

Thanks for amending the documentation! LGTM