Update site

docs/about/index.md
  - Change logo
  - "Where do I start?"
  - "Notes on the journey"
  - "Disclaimer"
  - Update mirrors
  - Update Matrix section
  - Update donations
  - Recommended reading material

docs/guide/index.md
  - Change logo

docs/media/metadata.png
  - Add image for "we kill people over metadata"
    Thank you anarsec.guide!

docs/mirrors/index.md
  - Update mirrors
  - "Where to find the Hitchhiker's Guide"
  - Our official git mirrors

mkdocs.yml
  - Shorten site name (displays better in tab)
  - Add git authors plugin for later
  - Update bottom "social" row with all git repos
  - Add hardlink to domain for bottom of page to backlink

docs/guide/index.md

@@ -13,7 +13,7 @@ schema:
     - https://opencollective.com/anonymousplanetorg
     - https://mastodon.social/@anonymousplanet
 ---
-![Anonymous Planet logo](../media/logo-transparent.png){ align=right }
+![Anonymous Planet logo](../media/profile.png){ align=right }
 
 There are several ways you could read this guide: