Update for LCDS WSRP portal support.
The code which extracts the endpoints from the services-config.xml (ServerConfig.as)
will now check to see if WSRP_ENCODED_CHANNEL is set and use that URL instead.
This limits these portlets to a single channel/endpoint.
In NetConnectionChannel.as, if a wsrp-url query parameter is detected in an endpoint URL,
extra information (such as session IDs) are appended the wsrp-url value instead of the