Revert "Merge remote-tracking branch 'origin/renovate/djangorestframework-3.x'"
Revert "Merge remote-tracking branch 'origin/renovate/djangorestframework-3.x'"

This reverts commit 6f1259600d76a27609ec6881c7af4130e50af69e.
stencila/hub,stencila/hub,stencila/hub,stencila/hub,stencila/hub