Self-hosted privacy policy, terms of service and code of conduct

[ojeytonwilliams]

People who self-host chapter will need a way to provide their own versions of these.

As @allella mentioned #2373 (comment) the simplest approach would be to leave them as links, but allow them to be customised.

There are two main tasks

• Persist the URLs
• Use the URLs instead of the hard-coded values

While the best UX is probably to provide a GUI to customise the variables (and persist them in the database) the simplest approach (sufficient for the MVP) would be to store them in environment variables.

[ojeytonwilliams]

Thinking about it, since there's a fair bit of site configuration, it might be best to create a dashboard page. It's more effort, but I think it's probably worth it given how many environment variables we would end up with. Also, having to redeploy the site to fix a typo in the description would be frustrating.