Vanilla cancan 1.6.9. Refs #5.
Generic authorization error handling. Refs #5.
Migrating authorization logic out of UsersController. Refs #5.
Verbose authorization in ProposalsController and views. Refs #5.
Verbose authorization in SuggestionsController. Refs #5.
Authorization in DashboardController. Refs #5.
Handle differently authorization errors when user is not logged in.
Authorization in AuthenticationController. Refs #5.
Authorization in application's layout links. Refs #5.
Merge remote-tracking branch 'origin/euruko2013' into 5-authorization

Conflicts:
	Gemfile.lock
	app/helpers/application_helper.rb
	app/views/proposals/show.html.erb
Indention and code styling.
Dummy authorization in HomeController. Refs #5.
Drop selections altogether. We are going to redo it anyway.
Enforce authorization. Closes #5.