Merge pull request #2 from rmetzger/gith_alex_gh_page

Changes to the website
Further improved the subnav JS.
Updated publications page.
Small design changes.
Changed wrong workshop event template layout of sections.
Prototype teaser design and text.
Ported the home page.
Merge pull request #104 from aalexandrov/gh-pages

New version of the Stratosphere website.
Added jquery library to the js sources (external sources load does not work on the current stratosphere.eu server).
Merge pull request #106 from aalexandrov/gh-pages

Added jquery library to the js sources (external sources load does not w...
renamed news to blog. added discus comments to the site
added another publication (on request of Fabian)
added new google analytics tracking