Merge pull request #420 from johntdyer/master

Added 3 more proposals
Added sponsor prices.
Added sponsorship information
Modified moritz logo.
Merge pull request #421 from rhoml/master

Added sponsor prices.
Capitalized Euros
Merge pull request #422 from rhoml/master

Capitalized Euros
Sorry mistake merging =( won't happen again.
Modified sponsorship prices.
Modified sponsorship prices.
Added logo to eventbrites website
Fixed eventbrite description. And added free tickets.
Merge pull request #423 from rhoml/master

Sorry mistake merging =( won't happen again.
merged rhoml's PRs
formatting fixes, moved pricing to header
Merge pull request #425 from agoddard/master

formatting fixes, moved pricing to header
added proposal for speaker 14
Adding proposals from speaker 15
Merge pull request #426 from johntdyer/master

Three more talks, woot!
updated title of proposal for speaker 13