* Allowed the user to now add piping calculation groups/folders to the piping failure mechanism or other piping calculation groups/folders. * Allow the user to add new calculations for piping calculation groups/folders. ** As such, we need a 'Context' presentation object for PipingCalculationGroup similarly as for PipingCalculation. Therefore a base class PipingContext has been introduced. * Added validation Icon. * Moved PipingCalculatrionFactory from Ringtoets.Piping.Service.Test to Ringtoets.Piping.Data.TestUtil Related to Issue [WTI-174] git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@1017 5a3db67b-de53-47b5-99c8-a1c30a6650e2