Add the nice kio_man header and footer to the generated kio_perldoc output.

This brings up issues of its own though: instead of forking the .css file everywhere we should come up with some kind of KDE standard for generated documentation output.
But until then, this is a working solution.

Required screenshots:

Before: <a href="/issues/2008-08-24/files/kio_perldoc-before.jpg">http://purinchu.net/dumping-ground/kio_perldoc-before.jpg</a>;
After: <a href="/issues/2008-08-24/files/kio_perldoc-after.jpg">http://purinchu.net/dumping-ground/kio_perldoc-after.jpg</a>;