Informal in the sense of "je" instead of "u" and still playful messages
Discussions are translated as "discussie" as opposed to "topic"
Responses are translated as "reacties" as opposed to "post"
All capitalization mid sentences has been removed, this is not common in Dutch (i.e. "View The Discussion" becomes "Bekijk de discussie")
I removed the 'blamey' part in the tampering alerts and just replaced with the technical "You can not edit|delete this post" (I looked at the code and it only happens when the user IDs don't match)
Also fixed a typo in the English email translation file.
Adds informal Dutch translations.
Also fixed a typo in the English email translation file.
Change-Id: If998471e04a59dc901fea4d7f98df235bfa721e3