Added plotter class. Not fully implemented yet.

nifty/config/nifty_config.py

nifty/plotting/Plotter/__init__.py

nifty/plotting/Plotter/plotter.py

nifty/plotting/__init__.py

nifty/plotting/descriptors.py

nifty/plotting/figures/__init__.py

nifty/plotting/figures/figure.py

nifty/plotting/figures/figure_internal.py

nifty/plotting/figures/multifigure.py

nifty/plotting/figures/util.py

nifty/plotting/plotly_wrapper.py

nifty/plotting/plots/__init__.py

nifty/plotting/plots/geomap.py

nifty/plotting/plots/heatmap.py

nifty/plotting/plots/private.py

nifty/plotting/plots/scatter.py

nifty/plotting/plottable.py

nifty/plotting/plotting.py