Pontoon: Update Dutch (nl) localization of AMO Frontend
Pontoon: Update Dutch (nl) localization of AMO Frontend

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

mozilla/addons-frontend,kumar303/addons-frontend,mozilla/addons-frontend,kumar303/addons-frontend,mozilla/addons-frontend,mozilla/addons-frontend,kumar303/addons-frontend,kumar303/addons-frontend