Dutch translation

[meniv-nl]

Hi There,

Great work! Hopefully fast a upgrade to filament v3.
Because I don't have persmissions to push/pull/commit etc. I'll leave the dutch (nl) translation here:
message.php.gz

[malzariey]

You could have made a fork then pull request to submit the translation.

Thank you for your contribution.

I have added the nl language file.