Return whether or not `user` can access a project.

        The project's is_ready field must be set for a user to access.

def can_access(self, user):
        """Return whether or not `user` can access a project.

        The project's is_ready field must be set for a user to access.

        """
        return self.class_.is_admin(user) or \
            self.is_ready and self.class_ in user.classes