- add Bernstein polynomials
- simultaneous fit:
  * use same binning for pp and PbPb and linear y-scale
  * improve plotsmanship for linear scale

- add separate fit for J/psi and psi(2S) mass regions
- improve sideband fits
  * cut on lifetime
  * use normal polynomials for proper normalization
  * subtract background fit and count in +/-1.5 sigma window

Signed-off-by: Torsten Dahms <torsten.dahms@cern.ch>
Merge branch 'HEAD' of git@github.com:tdahms/CMS-HIN-12-007.git

Conflicts:
	fitting/fit1DData_pbpb.cpp

Signed-off-by: Torsten Dahms <torsten.dahms@cern.ch>