Merge pull request #27 from nmorel/fixlink

fix links for twitter, github and mail images
Merge pull request #28 from nmorel/resolve

resolve data before showing the page
heure d'hiver ...
Update home.html
add pictures for 2013 events
link pictures into events
add speakers pictures
add events pictures
add more events and according speakers descriptions
Update events.json
IE8 compatibility
Merge branch 'ie8' into gh-pages