Removes /test

/test directory was not necessary since we are using rSpec.
Removes Year model

The Year model seemed unecessary when year information could easily be stored as a column in the Season model; it also required a complicated set of association between Team->Season->Year. This change removes the Year model and adds a 'year' column to Season.
Removes years from seed.rb
Updates Season.populate_win_loss to reflect removal of Year model
Merge commit
Save point again
Merge pull request #3 from Bigspencey/johns-first-branch

Remove Year Model