Dutch translation

I have adjusted the dutch translation made by [url=http://www.jevents.net/forum/memberlist.php?mode=viewprofile&;u=2941:geol8t82]joomrolf[/url:geol8t82]:

[list:geol8t82]
[*:geol8t82]Changed the short days into one letter (Ma -> M).[/*:geol8t82]
[*:geol8t82]Also added a file 'installatie.txt' with a howto to install the language files.[/*:geol8t82]
[*:geol8t82]Saved is as .zip instead of .rar.[/*:geol8t82]
[/list:u:geol8t82]

Thank you, [url=http://www.jevents.net/forum/memberlist.php?mode=viewprofile&;u=2941:geol8t82]joomrolf[/url:geol8t82], for your work!