Publish post 'Test nginx Configuration Directives' (#3)

Sitegen had some problems rendering `$host$request_uri` and `$$ct` so I had to make some changes to the Markdown renderer.

Reviewed-on: #3

html/.gitignore

@@ -15,4 +15,5 @@ posts/resize-a-qemu-disk-image.html
 posts/set-up-a-gitweb-server.html
 posts/start-erlangs-dialyzer-with-gui-from-a-docker-container.html
 posts/test-mix-task-file-modify.html
+posts/test-nginx-conf-directives.html
 pygments.css