we have imported only the OG-CSRD and will not be distributing the
drafts of Old Gus's custom content, the player's guide, PDFs, custom
images and the difficulty dial, and other stuff that is very strongly
his unique content, but in addition just doesn't work in the Markdown
file before/after conversion --- this includes the navbar and YouTube
embeds.
basically, this is all stuff that doesn't work anymore and I have no
intention of keeping in order to fix it, so it goes in core rather than
an editorial edition patch set
