Upgrade Cordova to 2.3.0

- Add in cordova js and jar files
- Make the WebSocket class take the cordova web view as a dependency instead
  of a DroidGap object. This will enable any object implementing
  CordovaInterface to use web sockets, even if it is not an activity.
moving to pusher-js 2.0.0-pre
2.0-beta.1 - update to use pusher-js 2.0