fake test user
cleaning up users & their tests.
Making the user controller more Ember-y. It should set the list of user roles to whatever the update says it is.
Don't allow users to remove all roles from a user.
Allow filtering by role
Checking to see what happens if the role isn't found. Happy with the default.
Should find user with role even if they have other roles too.
Merge pull request #29 from cyrusinnovation/refactor-roles2

Made user roles more Ember-y. Also got the fake user back.