adding belle2 lumis
Merge branch 'master' of https://github.com/mkarbach/gammacombo

Conflicts:
	core/include/UtilsConfig.h
adding new config items and uncommenting some asimov code

the uncommented asimov code is the piece that writes the
asimov values back into the PDF. This should be the default
anyway.
Moving the parameter evolution plots into a new class
working on a proper setup for scans for observables
a first working version of the observables scan is implemented
implementing a parse function for the new -c syntax
getting ready to switch over to the -c add/del PDF syntax

It seems to work already, although the old --addpdf and --delpdf
code still extists. To be removed in the next commit.
removing --addpdf and --delpdf