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

Co-authored-by: Mark Heijl <2768f22284a3a1a19b282345ce7b3c23351472ff@babelzilla.org>
Co-authored-by: Fjoerfoks <ed39826ee8e371a7cc336a52541984994fe2ad33@gmail.com>

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