#32 Protocol relative URLs do not work

[Jonas Stevnsvig]

Protocol relative URL // links do not work.

Links with protocol relative URLs, i.e. prepended with // as opposed to https:// or http:// give a "can't load //page.html" error.

Steps to reproduce:

1. Create a file index.html accessible via http or https
2. Create another file file2.html
3. Add the following links in index.html:
   <a href="http://myserver.com/file2.html">link1</a>
<a href="file2.html">link2</a>
<a href="//myserver.com/file2.html">link3</a>
4. select each link in turn.
5. 1st and second link will work, third will fail with "Can't load //myserver.com/file2.html"