index.html: Add link to my talk on GStreamer & stb-tester

at the 2013 Google Test Automation Conference.
index.html: Remove line break from copyright notice

After I changed "© 2012" to "© 2012-2013" (in 2d6d5838) the line break
is now in an awkward place. (Even before, it could've been equally
awkward for some font sizes / resolutions / etc).
index.html: Link to YouView website
Hardware: Link to article on image-matching parameters