Deprecate _local_ named web socket connection types

We have persistently struggled to federate local named web socket connections 
with each other.

Where we have a well-defined and implemented system of mDNS/DNS-SD for 
network-based services sadly the same type of mechanism is missing for 'local 
machine only' service discovery. We have been unsuccessful in finding an elegant
solution to this problem so we are therefore removing LocalWebSocket as a valid 
Named Web Socket type.

Thus, every Named Web Socket connection is now a Network Web Socket 
connection. This change greatly simplifies our concept and the proxy code
to the point that we can work around a precise type of Named Web Socket
without muddying the waters over exactly the scoping of different Named
Web Socket types.