Moved WindDirectionClosingSituationIllustrationPointProperties to common. Implemented illustration point result properties for GrassCoverErosionOutwardsHydraulicBoundaryLocation and inheriting classes. Related to Issue [WTI-1304] git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@10500 5a3db67b-de53-47b5-99c8-a1c30a6650e2