Ability to view team history. Fixes #603

Single page to view all of a team's past events. Kind of like http://www.usfirst.org/whats-going-on/team/FRC/83487

On the history page, the year links to the team's page while the event name links to the event page.

/team/604 or /team/604/2013:
![team_details](https://f.cloud.github.com/assets/1421884/691904/7e496706-dbd8-11e2-9855-78dcb2ba6cbd.png)

/team/604/history:
![team_history](https://f.cloud.github.com/assets/1421884/691905/7e50c3b6-dbd8-11e2-9583-4b51f36aae5a.png)