Merge pull request #3 from nledez/gh-pages

Ajout de l'installation de jekyll dans la doc
Fix #4 : Typo
Mise en forme page partenaires
Better image size for gravatar
Add optim to twitter profile image resolution
Avoid not squared speakers avatars to be stretch.

It adds a black background.
Merge pull request #5 from alexthomazo/gh-pages

Éviter aux avatars des speakers d'être déformés
Better colors
Text-align : left for modal
Fix #7 : Big updates in speakers page
Also fix #6 : links are visible now.
Add first version of 'programme' page
Automatic calcul of start and end time of day, and add of keynote format
Fix lab time and add colors
Add talk detail in modal
Add speakers detail
cfp is closed
Change colors
Hand cursor on talks in programme page
Merge pull request #9 from alexthomazo/gh-pages

Modification du curseur sur le programme
Add possibility to choose track type