This fixes a set of errors that users visiting the example.html page receive
when visiting the HTTPS version of Google Code, e.g.
https://javascript-bcrypt.googlecode.com/hg/example.html (for example, users of
the HTTPS Everywhere plugin will run in to this issue)
The errors are fixed by loading all sources from Google's CDN with
protocol-less URLs, which will enable the browser to use either the HTTP or
HTTPS version.