Pontoon: Update Dutch (nl) localization of MDN
Pontoon: Update Dutch (nl) localization of MDN

Localization authors:
- Ton <tonnes.mb@gmail.com>

mozilla/kuma,SphinxKnight/kuma,safwanrahman/kuma,a2sheppy/kuma,Elchi3/kuma,jwhitlock/kuma,a2sheppy/kuma,jwhitlock/kuma,safwanrahman/kuma,a2sheppy/kuma,escattone/kuma,mozilla/kuma,Elchi3/kuma,mozilla/kuma,yfdyh000/kuma,SphinxKnight/kuma,mozilla/kuma,safwanrahman/kuma,yfdyh000/kuma,SphinxKnight/kuma,escattone/kuma,SphinxKnight/kuma,safwanrahman/kuma,Elchi3/kuma,SphinxKnight/kuma,escattone/kuma,a2sheppy/kuma,yfdyh000/kuma,safwanrahman/kuma,Elchi3/kuma,jwhitlock/kuma,jwhitlock/kuma,yfdyh000/kuma,SphinxKnight/kuma,yfdyh000/kuma,yfdyh000/kuma,safwanrahman/kuma,jwhitlock/kuma,mozilla/kuma,Elchi3/kuma,a2sheppy/kuma