Added illustration point results for the StructuresCalculator: - Improved tests for existing calculators with IllustrationPoint outputs - Made HydraRing data model stricter for the FaultTreeIllustrationPoint Related to Issue [WTI-1308] git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@10692 5a3db67b-de53-47b5-99c8-a1c30a6650e2