PLT-3562 Switch websocket over to post-connect authentication (#4327)

* Switch websocket over to post-connect authentication

* Add ability to specify token in websocket js driver, add unit tests

* Temporarily disable client websocket tests until issues are resolved

* Minor refactoring and fix status test

* Add isAuthenticated method to WebConn and minor status updates

api/web_hub.go

@@ -156,6 +156,10 @@ func (h *Hub) Start() {
 					close(webCon.Send)
 				}
 
+				if len(userId) == 0 {
+					continue
+				}
+
 				found := false
 				for webCon := range h.connections {
 					if userId == webCon.UserId {