manually do signal bump now that I know how to do roofit manually

  things still look fishy on the signal bump!
the signal bump issue ended up being that I was adding in 1.0 event from the bakParamUnc "background"

  I was dependant on signal names being != "bak", which meant it was catching the new 1.0 event
  this is fixed now
RooModelPlotter: compute chi^2 from pull hist instead of RooFit
updated singleUseScripts/bkgPlotter.py to use the funcs we use now
singleUseScripts/bkgPlotter.py now plotts fits and pulls on one canvas like makeShapes.py