Implementation if DAO / guice dependency injection pattern. Organization
of the different actors of the pattern through different package :
com.isep (entry point, dispatchers, helpers and POJOs), com.core
(controllers), com.interfaces (for dependency abstraction layer),
com.implementation (for dependency defininition and overload). A better
organization has to be make, to segregate POJOs, helpers, and
application definition resources. To be continued in the next commit...