added HELPDESK_ENABLE_PER_QUEUE_MEMBERSHIP to discontinued settings;
added HELPDESK_ENABLE_PER_QUEUE_MEMBERSHIP to discontinued settings;

gwasser/django-helpdesk,django-helpdesk/django-helpdesk,mrkiwi-nz/django-helpdesk,django-helpdesk/django-helpdesk,rossp/django-helpdesk,gwasser/django-helpdesk,rossp/django-helpdesk,django-helpdesk/django-helpdesk,mrkiwi-nz/django-helpdesk,mrkiwi-nz/django-helpdesk,gwasser/django-helpdesk,rossp/django-helpdesk,mrkiwi-nz/django-helpdesk,gwasser/django-helpdesk,rossp/django-helpdesk,django-helpdesk/django-helpdesk