* Improved consistency between PipingCalculationGroup and PipingFailureMechanism node presenters context menus. ** PipingCalculationGroupContextNodePresenter uses provided IContextMenuBuilderProvider. ** Added validate all command to PipingFailureMechanism. * CustomItemsOnlyContextMenuBuilder supports building separators. * Introduced simple implementation of IContextMenuBuilderProvider. * Fixed bug where PipingCalculationContextNodePresenter was running calculations improperly (causing multiple progress dialogs to be spawned!) Related to Issue [WTI-174] git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@1124 5a3db67b-de53-47b5-99c8-a1c30a6650e2