Enable viewing of reference pages when javascript is disabled

[bkmgit]

The command reference page at https://profanity-im.github.io/guide/latest/reference.html loads the contents using aa javascript program https://github.com/profanity-im/profanity-im.github.io/blob/master/js/include.js the loaded files are plain HTML:

• https://github.com/profanity-im/profanity-im.github.io/blob/master/guide/latest/toc_fragment.html
• https://github.com/profanity-im/profanity-im.github.io/blob/master/guide/latest/main_fragment.html

It would be preferable to include these directly in the generated reference.html file rather than loading them dynamically so that people using browsers without javascript enabled can still view the content.

[jubalh]

The fragment pages are created by profanity from the built-in help. I assume that's why back then it was done like that. Maybe nowadays there is a better way to do it?