update django, djangorestframework, django-cors-headers versions
update django, djangorestframework, django-cors-headers versions

swcurran/TheOrgBook,WadeBarnes/TheOrgBook,swcurran/TheOrgBook,WadeBarnes/TheOrgBook,WadeBarnes/TheOrgBook,WadeBarnes/TheOrgBook,swcurran/TheOrgBook,swcurran/TheOrgBook,WadeBarnes/TheOrgBook,swcurran/TheOrgBook