translations PR 20170509 (#6367)

i18n/nl.json

@@ -1029,6 +1029,10 @@
     "id": "api.emoji.upload.large_image.gif_encode_error",
     "translation": "Unable to create emoji. An error occurred when trying to encode the GIF image."
   },
+  {
+    "id": "api.file.attachments.disabled.app_error",
+    "translation": "File attachments have been disabled on this server."
+  },
   {
     "id": "api.file.get_file.public_disabled.app_error",
     "translation": "Publieke links zijn uitgeschakeld door de systeembeheerder"