Cleanup of categories.py

  - Removed vlimant from operations
  - Removed ojeda from dqm
  - Removed rovere from dqm
  - Moved the following packages from geometry and put them in
    simulation:
    DataFormats/DetId
    DataFormats/EcalDetId
  - Added a new category: pdmv with boudoul, franzoni and srimanob
  - Moved the following packages from operations to pdmv:
    Configuration/Skimming
    Configuration/PyReleaseValidation
    DPGAnalysis/Skims
  - Moved the following	packages from operations to core:
    Validation/Tools