transistion to allow limit calculation for an increased massrange

This is addition is meant to allow limit calculation in an increased massrange.

Additionally it defaults hww treatment as background process in the configurations (setup/em/cgs-sm*, setup/em/unc-sm*.vals). Also the treatment and options for scripts/doSM.py and the postfitting scripts test/produce_macros.py and test/summary_plots.py were adapted.

Furthermore this pull request also includes performance improvements for scripts/doSM.py and an generalisation for python/UncertAdaptor.py.