A miminal dynamic client registration request

[Jeff Gaynor]

As per our meeting, here is the most minimal JSON request object to 
create a new client:

https://github.com/ncsa/OA4MP/blob/master/oa4mp-server-admin-oauth2/src/main/scripts/oidc-cm-scripts/minimal.json
really all that is needed are any callbacks (as an array) and a human 
readable name for the login page.

As soon as anyone needs/wants an administrative client let me know.

Jeff