OWL - Add: Create a OWL.

  Description
    
    Creates a new OWL.

  Controls

    'Id' -- The id of the OWL.

    'Title' -- The optional title of the OWL.

    'Description' -- The optional description of the OWL.

    'Add' -- Creates a new OWL.

    'Add and Edit' -- Create the OWL, and return
    the 'Edit' view of the created object.
