Fixed histogram key
Removed last remaining usages of Common Functions class. Moved all
functionality to FilterPlugin
Adapted range in Energy plotter script
Added new python plotter scripts
Renamed function for delta R matching
Implemented a new matcher class that matches an HO Rec hit with the
highest energy entry inside a delta R cone to a given eta phi value
Bugfixes to the previous commit
Adapted range of multiplicity histogram for lots of unfiltered HORecHits