new plugin: gateways plugin, and first implementation of findGateways

- test menu in Wix
- new actionResultExt method, for sending dictionary of dictionaries
- new getNextId method, for accessing sat ids from plugins.

frontends/quick_frontend/quick_app.py

@@ -41,6 +41,7 @@ class QuickApp():
         self.bridge.register("contactDeleted", self.contactDeleted)
         self.bridge.register("askConfirmation", self.askConfirmation, "request")
         self.bridge.register("actionResult", self.actionResult, "request")
+        self.bridge.register("actionResultExt", self.actionResult, "request")
         
         ###now we get the essential params###
         self.whoami=JID(self.bridge.getParamA("JabberID","Connection"))