FastCGI spec website

Since our beloved died, I recovered the original pages from the wayback machine and created an unofficial website for the FastCGI spec. The website hosts both the original spec page and a nicely formatted version, manually cleaned up and converted to markdown.

There is also a dedicated Github organization and a repository (linked above) with markdown and HTML source code. Issues and pull requests are always welcome; of course I won’t change the text of the spec, but I will fix typos and improve formatting.