Metadata translations - question

Hi,

There are a couple of languages possible to choose from in the user preferences. We would like to add some more for our users, and already found in File Management the 'translations' folder, where we can add a new folder with the respective translations. Then we adjusted the language name in the settings.json, and it seems to work.

However, there is this JSON folder, containing more translations, but no english version. Is there an english version of the files therein that we can use as master? or are they not in use anymore?

Thanks in advance for any insights,

Martha