This commit removes the https://www.goatcounter.com/ script that we were using for basic, privacy-friendly analytics. I don't really need that data, so there is not much value in keeping it.
- Split macros.html in per-edition files
- Create new snippets.html macro file with utterances snippet
- Move support.html to snippets.html as new macro
- Create new `latest_post` macro in 2nd edition macros.html
