I was taking a look over the network files during the page load,
and there are some files that I think it should be integraded in
just one file, for example the CSS.
Look this network status: http://i.imgur.com/YhKcue5.png
The print.css takes around ~700ms to download, and inside there
are just these lines:
body{background:white}pre{overflow:visible;overflow-X:hidden;font-size:100%}#search-box,#header,#navigation,#lastupdate,#tools,#footernav,#copyright,#github-ribbon,#top,.page-contents{display:none}div#content{background:white;border:0;margin:0;padding:0;font-family:serif;font-size:10pt}
Integraded or even should be inline in the HTML.