reworked prims-layer-generation to work from top to bottom and prefer older (lower) layers in cases of conflicting information

Conflicts:
	Gui/VtkVis/VtkVisPipeline.cpp

Conflicts:
	MeshLib/MeshQuality/RadiusEdgeRatioMetric.cpp
	MeshLib/MeshQuality/RadiusEdgeRatioMetric.h

Conflicts:
	Tests/GeoLib/TestBoundingSphere.cpp

Conflicts:
	Tests/GeoLib/TestBoundingSphere.cpp

Conflicts:
	Tests/GeoLib/TestBoundingSphere.cpp

Conflicts:
	GeoLib/AnalyticalGeometry.cpp

scripts-folder cleanup

The setup and corresponding scripts in base are not up-to-date since some time.
Use the devguide guide instead: http://docs.opengeosys.org/docs/devguide

[IO] BOOST_VERSION is defined only with version.hpp.