Made create_unknown_user an optional setting in the django config. If nothing is set, it defaults to True.
Made create_unknown_user an optional setting in the django config. If
nothing is set, it defaults to True.

Brown-University-Library/django-shibboleth-remoteuser,trevoriancox/django-shibboleth-remoteuser,uchicago-library/django-shibboleth-remoteuser,Brown-University-Library/django-shibboleth-remoteuser,uchicago-library/django-shibboleth-remoteuser,trevoriancox/django-shibboleth-remoteuser