Proposal implementation using the CodagRestFabricationBundle

This shall be the proposal using the the RestFabricationBundle as mentioned here: https://groups.google.com/forum/#!topic/resting-with-symfony/UNaK4fFzVF0

In this sample project we can unfortunately just profit from a subset of the provided features:
- FormHandler
- Errorhandling with predefined exceptions

Due to the lack of the entity manager usage, unfortunately the DefaultDomainManager cannot be presented. In combination with multiple entities this would be one of the key benefits of this bundle. Even though I guess the current implementation will represent some parts of this particular designed workflow.