Added TaxBundle to AppKernel
Merge pull request #54 from elcodi/feature/add-tax-bundle

Added TaxBundle to AppKernel
Adapted admin for new StateTransitionMachine

* Removed as well all the AbstractEntity dependencies
* Added specific interfaces casting
Merge pull request #57 from elcodi/feature/state-transition-machine

Adapted admin for new StateTransitionMachine
migrate to token storage
fix event namespaces