Here we present and try to answer any Dumb-arsed Questions you may have regarding how to install and update you're Fedwiki server.
Question: How do I maintain a site-wide CSS that differs from the default? Answer: I don't think you can at the moment. Changing the CSS outside of the theme folder in each sites status folder will be wiped with every update.
Question: When I update a server using "npm install -g --unsafe-perm wiki", does this update pull in the custom plugins, or does it overwrite the custom install with a default install? Answer: it keeps your custom install configuration - pulling in and updating any plugins that you specified in your custom package.json.