Django-event

Fixed redis subscriber memory leak.
Refactored base subscriber.
Added listener classes caching.

Fixed string port conversion.
Fixed rabbitmq exclusive queue.

Add i18n
Fix Django Request modification.

Implement swappable backend system.
Add redis backend.
Implement swappable model system.
Refactored request to support pure HttpRequest.
Global settings refactoring.

Add support DRF 3.X

Fixed ^C'ing run command.
Fixed session handling.