How is this site generated? Which CMS (Content Management System) are you using?
Most of the site is comprised of static HTML web pages, which are uploaded to the web-site as they are, after being generated using templates, data, and programs. The site’s sources are public and kept in a public version control repository, which also contains some automated tests and makes use of a continuous integration service.
While I am not ashamed of the site’s sources, they have been through a long history and legacy, and while I remain a big fan of static site generation, there are probably some better approaches out there for that, and often it is simpler to just write something of your own using a good preprocessor or a template system, a good build system and some code glue. However, for me, converting to something else would be too time-consuming, and I've already found some faults in one existing popular static site generator that I tried.