add dutch language files

customize.dist/messages.js

@@ -14,6 +14,7 @@ var map = {
     'ru': 'Русский',
     //'te': 'తెలుగు',
     'zh': '繁體中文',
+    'nl': 'Nederlands'
 };
 
 var messages = {};

customize.dist/translations/messages.nl.js

@@ -0,0 +1,13 @@
+/*
+ * You can override the translation text using this file.
+ * The recommended method is to make a copy of this file (/customize.dist/translations/messages.{LANG}.js)
+   in a 'customize' directory (/customize/translations/messages.{LANG}.js).
+ * If you want to check all the existing translation keys, you can open the internal language file
+   but you should not change it directly (/common/translations/messages.{LANG}.js)
+*/
+define(['/common/translations/messages.nl.js'], function (Messages) {
+    // Replace the existing keys in your copied file here:
+    // Messages.button_newpad = "New Rich Text Document";
+
+    return Messages;
+});

www/common/translations/messages.nl.json

@@ -0,0 +1,2 @@
+{
+}