* Implemented storage for structure failure mechanism specific parameters ** Create and read extension methods defined for HeightStructures, ClosingStructures and StabilityPointStructures failure mechanisms. ** Updated FailureMechanismEntityReadExtensions and Height-, Closing- and StabilityPointStructuresFailureMechanismCreateExtensions for new storage methods shown above. * Moved HeightStructuresSectionResultEntityReadExtensions Related to Issue [WTI-837] git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@6015 5a3db67b-de53-47b5-99c8-a1c30a6650e2