Updated docstring.

    '''

    A base class to define a job.

    The standards job items are:

     * id: id of the job

     * status: message explaining the current job status

     * done: True if the job is done

     * cancelled: True if job has been cancelled by user

     * created: job date of creation

     * ended: job date of end (or None if done = False)

     * duration: duration in seconds of the job (processed on export)

     * author: author login of the job

    :param manager: the :class:`JobsManager` instance.

    '''