The thing that previously presumably hindered this was that the VAPID
keys had to be set up. Previously admins had to do this, but this is a bad
idea for multiple reasons:
1) The meaning of "public key" and "private key" was not well documented
in the settings.
2) Giving out a private key over the API, even just for admins, sounds
like a bad idea.
Co-authored-by: Francis Dinh <normandy@biribiri.dev>
This adds a new "Translation Settings" page to the admin interface where
the admin can configure the instance's translation settings. The
existing settigns for DeepL translation settings will now be located in
that page alongside the new LibreTranslate stuff.
Also made the translation service settings localizable, which funnily
enough was not already the case.