update to latest try-cb frontend

There was a bug in the front-end where the incorrect header name was used for Authentication.  The front-end has been updated to use the correct header, but each backend needs to pull the latest version of the front-end, and make the necessary changes to the backend to use the correct header.  The old header that was used was 'authentication: Bearer ...', but the correct header is 'Authorization: Bearer ...' as per the HTTP specification.