I spend some time refreshing the look and feel of the site and finishing the other tasks above. I've already committed the new images, but here's the patch for all textbased files.
Maybe I need to append the enforcer-plugin for running the site goal, because I'm making use of the maven.buildnumber property which seems to be provided since maven 2.0.9.
The buildnumber will show the last published date in the upper right corner.
Some pages have been restructured, making it better readable (I hope).
revision 612 contains commits for the new website. It's a mixture with the best of both worlds: reports are dynamically generated and xsite can decorate these pages.
It's a huge step forward, but there are still some small issues, so I won't close this issue yet.