- A specific bug was present in ThinSi.cc : deletion of the material
    (forbidden)
  - A general bug was present causing the TTree to crash: The branches
    address need to be cleared and the branches deleted before
    reloading the geometry

  - Reload the current generator
  - Load a different one
  - Adding corresponding button in the GUI

 - Delete the actual geometry
 - Clear the Detector Manager
 - Reload Geometry file

For this to work a couple of thing has been done:
 - InitializeRootInput now need an extra SetBranchAddress to tell the
   tree that the previous address is no longer in use
 - Scorer can not be cleared, so need to be retrieved in case of a
   reloading. If they do not exist they are created
 - This is done using the new CheckScorer static method from VDetector

* editing the NPSimulation UI for nicer interface
 - adding menue and icon for common command
 - adding free icons for nice interface

* Adding creation of small sample cube by the material manager to ensure
* every declared material are used, so no crash when writting the DEDX
* tables

* Advancing Tiara Barrel Simulation, now working (still to be tested
extensively)

 - all material were always define but not use, causing crash in DEDX
   table output
- code clean up for Plastic.cc

* changing vis.mac file to use OGLI instead of OGLIQt interface

* The proton were registered as ion and did not interect any mor

* outputted incorrectly

* Fixing minor bug in NPBeam and NPReaction

* Sharc scorer are now named SIlicon Scorer
* GeneralScorer moved to ObsoleteGeneralScorer
* The Obsolete Scorer are kept until all detector are move to the new
* syle of scorer

 - Similar mecanism to the CS system
 - Allow user to provide a random Ex distribution in txt or root file
   format
* Changing Display of Gaspard, Paris and Must2 detector for the GMAP_LOI preparation

  - Should be 1 was -1

* x was filled instead of z

 - The generated and copied file are now ignored

 - Some old machine requiered the -e flag in front of echo to interpret correctly the \t command as a tab
- some new machine ignore -e and the make fail later
- The solution to both is to suppress the -e flag (done before) and replace \t by the ascii code \011

- The Beam info were filled but cleared too soon
- A flag telling whenever the info need to be cleared has been added

  header and src files of each defined detector are now
  symlinked in the include and src directory instead of
  being hard copied

* Remove compilation warnings in Tigree.cc

   + geant4 files are kept in the include and src directories
   + one directory is created for each detector. This directory
     contains the associated headers and sources files
   + a script directory is created with some scripts allowing the
     conditional compilation

 * Add #ifdef statements in DetectorConstruction.cc file
   + this applies to each detector header

 * Move G4MultiFunctionnalDetector.hh header from Sharc.cc to 
   Sharc.hh

 - In the case of multiinteraction in the same volume, the scorer was keeping only the last energy deposit, instead of summing them
 - The threshold has been move in the Read sensitive and is no longer in the scorer, as the energy deposit can be down in multiple step each of them below threshold and be ignored if the threshold is applyed individually.