L10n updates

Ey Stephw, please review more changes I do to the localization section. You can preview this changes in the develop branch, at: https://lektor-staging.torproject.org/community/develop/localization/pick-a-project/ https://lektor-staging.torproject.org/community/develop/localization/current-status/ https://lektor-staging.torproject.org/community/develop/localization/becoming-tor-translator/

Thanks!