Drupal theme: Universiteit Antwerpen v6.x-1.0 released

I just fixed up the next iteration of the Drupal themes for the genuine Universiteit Antwerpen corporate design.

It contains mostly fixes here and there, but also more important changes like replacing all the images by PNG resulting in a lot smaller page sizes.

Also, I took the release as a chance to stick to the common Drupal theme naming scheme, with the Drupal version (6.x) actually appearing in the theme's version string.

Everyone who uses it is encouraged to update and report bugs and glitches back to the theme's page!