New FIRST Event and Team pages

The new pages don't require a session id. Also, this should future-proof us if FIRST decides to kill the old pages.
Furthermore, with this new format we can get event details (date, location and event_teams) for pre-2003 events (I'll put up a separate pull request for that).

1997 Motorola Midwest Regional: http://www.usfirst.org/whats-going-on/event/6623

Old Team Page: https://my.usfirst.org/myarea/index.lasso?page=team_details&tpid=83487&-session=myarea:0A7D78870f4f90120DokGn305BCE
New Team Page: http://www.usfirst.org/whats-going-on/team/FRC/83487

Old Event Page: https://my.usfirst.org/myarea/index.lasso?page=event_details&eid=8983&-session=myarea:0A7D78870f4f9012CDsSYp30761A
New Event Page: http://www.usfirst.org/whats-going-on/event/8983

Old EventTeam Page: https://my.usfirst.org/myarea/index.lasso?page=event_teamlist&-session=myarea:0A7D78870f4f9012CDsSYp30761A
New EventTeam Page(s): http://www.usfirst.org/whats-going-on/event/8983/teams