Cleans up database configuration
Improves User#plays!
Improves authorization error messages
Adds authorization to idea creation
Adds conditional back redirection
Leftover
Adds authorization to toplevel submit link
Fixes flakey spec
Adds a new "submitter" role
Makes account creators sumbitters
Merge branch 'milestone/2/the-courrier' into feature/add-submitter-role

Conflicts:
	app/helpers/authorization_helper.rb
Merge pull request #79 from mezis/feature/add-submitter-role

Feature: Add submitter role