Really 64

- SubscriptionManager
- SubscribeAggregator
- ObjectSubscriber
- Replayer
- GorillaCenter new subsxription handling
- All the Gorilla wiring
- JSON parsing fix
- WIP of Unsubscribe handling
no need for this message, as this actor will receive `Terminated` as the replayer will terminate after sending this message
 ```
  def shutdownWithObjectSubscriptionAck(reason: String) = {
    shutdown(reason)
    objectSubscriber ! SubscriptionFailure(r, 500, reason)
  }
```
and in this case the client will receive this message two times