Removed pyramid section and unused material.

with explanation of expm1; compatible polyhedron section.

Wuttke, Joachim authored 9 years ago and Wuttke, Joachim committed 9 years ago

Nicer derivation, wrong handling of const term,
wrong handling of singularity.

Conflicts:
	Core/Algorithms/src/GISASSimulation.cpp

ColorMapPlot now has fixed margins to prevent axes rectangle jamping, when switching to another units