Really 64

- SubscriptionManager
- SubscribeAggregator
- ObjectSubscriber
- Replayer
- GorillaCenter new subsxription handling
- All the Gorilla wiring
- JSON parsing fix
- WIP of Unsubscribe handling
each error will have a unique error code according to the new specs of error codes http://confluence.cloud9ers.com/display/REL/Error+Messages, you can only customize the error message not the `code`