added first draft of the Tstat proxy and a few modifications of on the develop branch

- better integrated a switch to remove security
- added command line options to specify supervisor ip address and port. Default values
  are assumed to be ip=127.0.0.1 and port=8888 as defined into mplane/httpsrv.py
- client.py support a 'connect' without parameters. This implies the usage of 127.0.0.1:8888
  with either http or https based on how the client is launched
- capabilities are now annouced in the same order as registed on the probe
- integrated Tstat capabilities elements in the json registry