The user registration, forgotten password, and forgotten username emails have all been translated! 🙂
For example, here's the "forgot username" email in Romanian:

I also discovered that the Slovenian version of the site was at slk.mylittlewordland.com when it should have been at slv.mylittlewordland.com . I've fixed this, but I didn't add a redirect from slk to slv, because slk is actually the Slovakian language abbreviation :/ This means that any links to the Slovenian version of the site will need to be updated. My apologies, and hopefully this doesn't affect too many people.