supports websockets, unix domain sockets and existing jaxrs over http. 

Added custom connector provider so jaxrs client can also communicate over
unix domain socket, switching between http and or websockets will be 
a configuration detail. 

This initial commit ensures the unix socket transports works as expected
and the existing tests run as before over http.

to runtime to avoid unintended usage.

not started jetty server instance for websocket server and rest server. 

Added work around for jetty's slightly ropy jsr356 support, willDecode 
appear not to be invoked on decoders. Added Response object and codec 
with dispatching logic, maintaining the current codecs as they are 
with the hope that this is fixed in the future.

than protocol. Added log warning when used to create server. 
Delete unixsocket server module.