Can trade cards, mostly works, I made the mistake of working too late and now my commits make no sense
Removed a bunch of bindings
Specified foreign key in associations, although I don't thnink this solved the issue, revisit
Now adding listed_cards to a tradeable_list through build
Fixed typo in conditional if statement
Added some more associations, should revisit to see if necessary
Updated schema and seed
Merge branch 'master' of github.com:pschwyter/mtg_json_api into refactor_trades

Conflicts:
	app/controllers/trades_controller.rb
	app/views/trades/new.html.erb
	app/views/trades/show.html.erb
	db/schema.rb
Merge branch 'master' of github.com:pschwyter/mtg_json_api into refactor_trades
Removed bindings