Fix DevCon2014 Sponsorship Information

Source update for DevCon2014 page. (I believe this is all that is needed. running through rake preview, it seems that there is still a 404 for /devcon2014/img/fancybox_sprite.png but this doesn't exist in the original site, also for js/respond.min.js1 (but that was the original state of the site as well)). 

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