Merge pull request #3 from zufrieden/silex

Responsive menu + sponsors template + speaker talks link + review design
some random updates
Add content
Update misk pages

Merge branch 'silex' of https://github.com/gillesdemarty/uxlausanne into silex

Conflicts:
	templates/speaker.html.twig
Fine-tuning style :
* Consistency on a elements
* Consistency on Speaker descriptions
* Minor alignements on text size
* Sponsor image style
* Sponsor content
* Add copy "More speaker soon"
* Use lead as "sponsor as become sponsor"
* title on the speaker page
* introduce twitter element on speaker
* smaller text size on the reasons to attend
*
Merge pull request #21 from gillesdemarty/silex

Silex