Add ability to delete tournaments
Remove redundant/unsafe Tournament.find

"This is a bit redundant and quite unsafe. The #find_tournament_and_rating_period before filter already finds the tournament and it's scoped to the current user correctly"
Merge pull request #19 from jtwalters/add-tournament-delete

Add ability to delete tournaments
Stop tournament edit form from deleting tournaments
Merge branch 'master' into player

Conflicts:
	app/controllers/tournaments_controller.rb