checkpoint

- Send client-side redirect when there is no first node in the path. Redirect should be to default server (sb)
- Create a dummy error page with {{err}} token to be replaced before serving
- Fetch user roles from service broker.
- Add configuration type "service-dependencies" which will include SB, UM, ACL, and for each of these, include protocol, host, port, base path.
- Add maxPayloadSizeBytes to config
- When a request is made to reverse proxy to non-default server, check for SID in query string, if absent, return fail page with error message.
- When request is made to non-default server with SID, the service broker "fetch roles" call needs to contain SID
- Change sym key size to 256
- Add dynamic config functionality
- Some TODO's..