Split from nl.yml, updated and ran spellcheck

As suggested by Jeff, I updated the files to match the updated format of client/server seperated code.
Split from nl.yml, updated and ran spellcheck
Updated, removing tabs and whitespaces. Changed 'en' to 'nl'

Sam: could you try this one instead? Forgot to change 'en' to 'nl' Cheers.
Changed quotes

I used " -quotes in the text, which didn't escape properly. Ran it through a YAML linter and it seems to validate.
Sorry for the inconvenience!
Merge pull request #195 from merugear/master

Updated Dutch Locale