* Updatting PhysicsClass for Hadronic Processes

* particle for the same event. Example of token is in
* Inputs/EventGenerator/np.source No need to modify token of
* proton.source or deutron.source... It reads m_particleName as a
* vector<string> now and loop over the size of m_particleName

* in NPS:
        - When a user used -DETLIST flag to select specific detector,
        the choice was registred and used in npl correctly but no
        detector was compiled in npsimulation
        - The NPS CMakeLists.txt has been modified to mirror the npl one

* multiplicities for an event. A new token 'Multiplicity=' has been
* created that is given to m_Multiplicity. In the function GenerateEvent
* a loop on m_Multiplicity is done for a given event. The
* check_Multiplicty is not require in order to not break any use of
* NPTool. The default value of m_Multiplicty being 1.