fitOrderChooser.py: require SumPow/Exp Coefs > 0
  and more consistent debugging printouts for all PDFs
fitOrderChooser.py: updated Laurent. Don't trust it
fitOrderChooser.py: updating default orders of Chebychev and SumExp
fitOrderChooser.py: updated SumPow default orders
makeCards.py: Fixed regression bug: Voigt params correctly constrained in txt card