halfway through using gorilla toolkit's websocket
Complete migration to gorillatoolkit websocket

Reason for migration was problems with large and nigh concurrently
incoming messages being indiscernible from one large incoming message
behind the API of the old library. gorilla provides convenient
ReadMessage() method that does all the heavy lifting unambiguously.

Committed halfway through because I hesitated; maybe
code.google.com/p/go.net/websocket ain't so bad, after all? I see that I
can implement some custom interfaces and there is some frame logic under
the covers... let's have a look at that source. ehh.. what? where is...
but how..

no.