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* Automaticly write the table corresponding to the target and light/beam particle in the input/EnergyLoss directory

* Now interaction coordinate and Energy loss of the beam are compute using a target method, called in the different event generator
	- Some test have been done, results are OK
	- Simulation is slightly slow done by this process of slowing done the beam, mainly because an Energy loss table is called every events...

   + Target.{hh,cc} class now has a method returning the target material
   + VEventGenerator.{hh,cc} class now returns the effective thickness
     of target seen by the beam before interaction (method CalculateBeamInteraction)
   + Propagate these changes in the different EvenGenerators

* Update Gaspard documentation

	- Wrong token sequence is no more issued when a comment is insert within the input file
* Adding comment support for AnnularS1

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  EventGeneratorXXX classes instead of part of its own private members

* Update of the TODO file

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