major update

1. registration page removed from navigation
2. registration button replaced with 'how it was' with link to Lanyrd's
coverage page
3. slides file by Jan Musil
4. slides file by Aivars Kalvāns 'Shared Database Concurrency'.pptx
5. slides file by NoMetrics — the ephemeral role of data in decision
making by Torbjörn Gyllebring.pdf
6. slides file by Maaret Pyhajarvi 'Serendipity and Perseverance -
Injecting Testing in a Test-Resistant Team'.pptx
7. link to slides by Ilja Dmitrijev
8. slides file "Artem Fedko 'Agile on Board or How We Do It at
Intel'.pptx"
9. link to slides András Velvárt 'Kinect — the Eyes and Ears of Windows'
10. slides file Antti Niittyviita 'Testing - What if it was a sexy
business'