Restore facility membership filtering in member_of filter.
Restore facility membership filtering in member_of filter.

mrpau/kolibri,learningequality/kolibri,learningequality/kolibri,indirectlylit/kolibri,learningequality/kolibri,mrpau/kolibri,mrpau/kolibri,indirectlylit/kolibri,learningequality/kolibri,mrpau/kolibri,indirectlylit/kolibri,indirectlylit/kolibri