WebEngine framework has changed a lot :
- changed state management policy (stateless vs stateful)
- changed JAX-RS binding
- changed some parts of the model
- changed way to declare webengine module
- refactoring to allow pure JAX-RS application and ECR contribution
So we have now several small issues to fixes :
- ensure compatibility so that WebEngine module developped for 5.4 can run on 5.4.2
- update the doc
- ideally provide a nice an clean sample