Fix small typo
Add missing itemscope for speakers
Fix indendation
Add link to speaker hashtag
Add Xavier Noria as a keynote speaker
Change link to speakers standalone page
Remove speaker standalone proxy
Make standalone speaker a partial
Refactor speakers

* Use the partial for the speakers in the front page
* Properly
* Simplify the YAML format (array)
* Add id and keynote in YAML
* Fix microdata (each li is an itemtype)
Add speakers in YAML
Add Witek as a speaker
Add Bussink as a speaker
Add Smith as a speaker
Add Tennhard as a speaker
Add Shaughnessy as a speaker
Add Lovell as a speaker
Add Kalderimis as a speaker
Add Oliveira as a speaker
Add Ramirez as a speaker
Add Kelly as a speaker