Refactored normalize_friendly_id code and created Tournament model.

Conflicts:
	db/schema.rb
Created tournament team model and sample teams (from 2013) are created in db:seed.
Created tournament game model and sample games are created in db:seed.
Created bracket model.
Render current tournament standings on bracket show page.
New action for brackets.
Show page for brackets.
Secured bracket show pages before tournament begins.
Force user sign in before creating bracket.
Merge branch 'master' into brackets

Conflicts:
	app/assets/stylesheets/site.css.sass
Mode for editing on show page.
Can edit and update your brackets.
Created admin pages for managing tournaments.
Pages to edit preview and article for each tournament team.
Link to bracket pages from tournament page.
Game preview modal pops up on double click.
Admin page for creating teams.
Can edit tournament challenge text from admin interface.
Design improvements for brackets.
Merge branch 'master' into brackets

Conflicts:
	app/models/post.rb
	config/application.rb
	config/routes.rb