[WIP] - Resolved #2 + Added missing use statments

As stated in #2, there is 2 sorts of "missing use"
* the statment is missing: we just have to add the correct use
* the annotations from Doctrine, which are auto-loaded

As far as I have investigated, this is not an ``AnnotationReader`` but a ``SimpleAnnotationReader`` which is used.

So, we need to add "every" missing statments. This will resolve the issue until we take a big review of our custom auto-loader...