* Updatting PhysicsClass for Hadronic Processes

* 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.

! angular ditribution from an TH1F histogram to simulate p, d, t...

source

Interaction on Hira and extract ThetaLab

* Fixing GeometricalEfficiency.C macro to fit new TInitialCondition
* Adding support for TInitialCondition in Sharc

 - NPS was giving conflict between NP system of Unit and CLHEP one, this is was fixed by a nested ifdef on HEP_SYSTEM_OF_UNIT

* Fixing issue with S1:
 - in Detector Manager a tipo was desabling the condition compilation of S1

* Fixing issue in Isotropic:
 - conflict when the particle was light nuclei given by its name (eg proton instead of 1H)
 - Problem is fixed and user can use gamma, proton, deuton, triton and alpha spelling

   + It was checked that excitation energy is reconstructed properly

* Clean code in GaspardTrackerSquare and GaspardTrackerTrapezoid

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   - Change path in PrimaryGeneratorAction.cc
   - Update HOWTO / README files