Fix jailed links

Problem was that the <base> tag got a bad href-value, which made it
impossible to open outbound links...

With this change, links in the generated html should be working, but not
for the testSetup.sh script, since it will now point to
blog.example.org, and expect to be able to call out to that URL for
resources...

This could be handled by calling (cd live;python2 -mSimpleHTTPServer &)
and also updating the testSetup.sh script to use http://localhost:8000
as BLOG_URL instead of blog.example.org

However, I am NOT comfortable with, or interested in, starting a
web-server on some poor unsuspecting persons computer.

(Plus, what's to say that they've got Python(2) installed?)