Pages Update/Sports changed to League

1.Added empty route/template/view for two pages to view individual teams and players.
2.Changed sport to league, gave league a sport attribute. With the old
model, we'd have all players in all offices in the same rankings, which is no fun.
You want to compete against the people you play. May expand sport to its own
table and FK it in, but for now just the sport is sufficient for our needs.