Major overhaul of the PBAS web site

Hallelujah!

I have finally done what I've been postponing far too long and updated both the site and the discussion forum. This is a major update - more or less everything has been changed. I'm pretty sure I have managed to move all relevant contents over, both for the site and the forum, but I might have missed something. Please look around and let me know if something is amiss.

If you are wondering, I'm now using the most excellent CMS Drupal for the site with a bunch of customizations by me, and forum software from Simple Machines. The reason I wanted to change forum software is that it was getting increasingly difficult to keep up with the security patches in PhpBB, especially since the forum was heavily modified. SMF has a much smoother way of handling updates and patches.

Hope you all will like it.