Add events

This is the beginning of the Event work in order to streamline our CoderDojoSF scheduling process. Still a long ways to go but wanted to share what I hacked together so far this weekend.

- [x] Copy last event on Eventbrite.
- [x] Update event and ticket start and end dates.
- [x] Open registration on Eventbrite.
- [x] Web interface for creating, listing, and editing events.
- [ ] Cron job/rake task to take Event through states to completion.

I made this a Rails app so that we can make it a front end to our events as well down the road. @nrrrdcore are there any UI frameworks besides sass/compass that you want setup and tested?

/cc @cameronmcefee @brntbeer @nrrrdcore @kneath