Yesod auth i18n romanian

[ciukstar]

Before submitting your PR, check that you've:

• [x] Bumped the version number
• [x] Documented new APIs with Haddock markup
• [x] Added @since declarations to the Haddocks for new, public APIs

After submitting your PR:

• [x] Update the Changelog.md file with a link to your PR
• [ ] Check that CI passes (or if it fails, for reasons unrelated to your change, like CI timeouts)

[snoyberg]

Thanks!