Merge pull request #410 from parkerd/master

announce registration on welcome page of atlanta 2013
opening registration
updated sponsors (Next Big Sound, Knewton)
updated registration widget
adding a few missing commas
yeah, so yet another typo fixed.
Added info about Lotus Outreach
edits to registration page.
updated NBS logo (with border)
let's not forget the blue border, shall we?
added speaker 12
Wix logo
Merge branch 'master' of https://github.com/jedi4ever/devopsdays-webby
[NYC2013] Spotify Gold sponsor
Wix logo
Merge branch 'master' of https://github.com/jedi4ever/devopsdays-webby
minor tweaks for atlanta 2013 pages