Migration to Foswiki

At last, I found the motivation to work again on this site that I have left dormant since 2009. And I start with a long deserved migration of the engine from the old TWiki system to the superb Foswiki WIki engine.

Just installing a new Foswiki, and copying the data seem to provide a working base, I will then work on fixing the minor bugs and designing a new look in the following weeks.