Possible additional changes

• Treatment of overlapping volumes (keepin- and module-volumes)
  Two possibilities:
  1. New parameters without overlaps
     (Eventually discard of some keepin-volumes)
  2. Usage of GEANT flag "MANY" instead of "ONLY"
     (Loss in performance ?)
      
• Initialization of partial setups
  (via user defined setups for the detectors)
   
• Replacement of Templates
  Two possibilities:
  1. by stand-alone classes
  2. by HYDRA / ROOT classes
      
• Storage of some basic geometry information in the ROOT output file