core.py: deepcopy plotData for each plot module so that they can run in a sequence
logging: introduced colors
Added simple progress bar as python iterator
inputroot.py: example usage of the ProgressIterator
progressiterator.py: better formatting
moved input consistency check to prepare_args method
Merge branch 'master' into mplcleanup

Conflicts:
	Plotting/python/plotmpl.py
add commandline options for stepped plots and for zorder of the nicks