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

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

aviarypl/mozilla-l10n-addons-frontend,tsl143/addons-frontend,muffinresearch/addons-frontend,squarewave/addons-frontend,kumar303/addons-frontend,kumar303/addons-frontend,mstriemer/addons-frontend,kumar303/addons-frontend,tsl143/addons-frontend,muffinresearch/addons-frontend,aviarypl/mozilla-l10n-addons-frontend,tsl143/addons-frontend,jasonthomas/addons-frontend,squarewave/addons-frontend,aviarypl/mozilla-l10n-addons-frontend,squarewave/addons-frontend,tsl143/addons-frontend,mozilla/addons-frontend,aviarypl/mozilla-l10n-addons-frontend,mozilla/addons-frontend,kumar303/addons-frontend,jasonthomas/addons-frontend,mstriemer/addons-frontend,muffinresearch/addons-frontend,mstriemer/addons-frontend,mozilla/addons-frontend,jasonthomas/addons-frontend,mozilla/addons-frontend