helpers.py: added sortCatNames Function
  fitBiasStudy.py: Removed x-Order lines in latex now that they don't
    mean anything anymore
    Also sort cat name nicely
  fitOrderChooser.py:  sort cat names nicely
fitOrderChooser.py: don't crash if order not found
Merge branch 'fitBias_HggZPrimeHybrid' into fitBias_HggZPrimeHybrid_window15GeV
  properly sort cats in fitOrderChooser.py and fitBiasStudy.py
  Don't Crash if fitOrderChooser.py doesn't find order