add accesskey, make it valid HTML and CSS, some small tweaks
- [DBH] fosdem2006/index.html
- [DBH] fosdem2006/intro.html
- [DBH] fosdem2006/slide_01.html
- [DBH] fosdem2006/slide_02.html
- [DBH] fosdem2006/slide_03.html
- [DBH] fosdem2006/slide_04.html
- [DBH] fosdem2006/slide_05.html
- [DBH] fosdem2006/slide_06.html
- [DBH] fosdem2006/slide_end.html
- [DBH] fosdem2006/slides2006.css