[Newsletters] Display sent Newsletters on the website
Feature Request
Description
Once a Newsletter is sent, it should also be shown on the website. A list of newsletters (with permissions check) could be shown at e.g. https://scipost.org/newsletters. Individual newsletters could be rendered either on the same page, or at individual pages https://scipost.org/newsletters/[newsletter_id]. The https://scipost.org/newsletters url should be linked to from https://scipost.org/news/.