added "vehicle equipment" to primary bus csv reader, fixed lowload(from 0.2 to 0.4 of refload) for Interurban and coach whithin the DeclarationSegmentHeavyBuses test

(cherry picked from commit 74df1e83)

# Conflicts:
#	VectoCore/VectoCore/VectoCore.csproj
#	VectoCore/VectoCoreTest/VectoCoreTest.csproj

harmonize namespace prefixes: use version number - this way it is easier to identify in a later schema version where the type was originally defined

updating documentation on xml input schema, make sure all pictures are similar, adding namespace and base type info

updating generic vehicles: adding new generic vehicles for medium lorries, primary bus, single bus, and VTP sample data (declaration mode), removing old (ricardo-aux) bus model

buses: for vehicles with a width between 2.5 and 2.55m use 2.5m as width. for all other vehicles use the actual vehicle width for calculations