Added PipingSemiProbabilisticOutput which will contain output of a semi probabilistic calculation for piping. Added contribution and norm to GeneralPipingInput. Updating GeneralPipingInput based on the reference line (in assessment section), contribution (in piping failure mechanism) and norm (in assessment section) set. Related to Issue [WTI-385] git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@2569 5a3db67b-de53-47b5-99c8-a1c30a6650e2