`src/jekyll/media` -> `src/jekyll/website-media`
Remove unused `normalize.css`.
Check in built website.
Add symlinks for serving the website from the root.

Also .nojekyll file for the symlinks to work.
Protocol-neutral URI for images in readme.
Build website.
Protocol-neutral image URIs in readme.
Use `http` protocol on image URIs in readme.
Remove `.keep` file from `src/website`. Jekyll created directory.
Better English in website docs.
Fix error regarding GitHub in website docs.
Document publishing the website.