Fix the djangorestframework version.
Fix the djangorestframework version.

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