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

Localization authors:
- Mark Heijl <markh@babelzilla.org>

mozilla/addons-frontend,aviarypl/mozilla-l10n-addons-frontend,mozilla/addons-frontend,aviarypl/mozilla-l10n-addons-frontend,kumar303/addons-frontend,mozilla/addons-frontend,tsl143/addons-frontend,kumar303/addons-frontend,kumar303/addons-frontend,aviarypl/mozilla-l10n-addons-frontend,aviarypl/mozilla-l10n-addons-frontend,tsl143/addons-frontend,tsl143/addons-frontend,tsl143/addons-frontend,kumar303/addons-frontend,mozilla/addons-frontend