UseBreakWaterProperties now has 2 constructors. A parameterless one which can be used for readonly properties and one constructor which accepts an ICalculation which will be updated after changes. GrassCoverErosionInwardsInputContextProperties now also clears calculation output on input changes (except for UseBreakWaterProperties). Implemented Calculation property for WaveConditionsInputContext, so that it can be used for the UseBreakWaterProperties. Related to Issue [WTI-968] git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@7452 5a3db67b-de53-47b5-99c8-a1c30a6650e2