Add a third-party ReferenceListProperty class. This is going to be used to
contain the references to Questions that make up a Quiz.
Patch by: Todd Larsen
Review by: to-be-reviewed
include AUTHORS
include INSTALL
include LICENSE
recursive-include docs *
recursive-include scripts *
recursive-include django/conf/locale *
recursive-include django/contrib/admin/templates *
recursive-include django/contrib/admin/media *
recursive-include django/contrib/comments/templates *
recursive-include django/contrib/sitemaps/templates *