* Defined CriticalFileReadException * Aggregate multiple exceptions on PipingSurfaceLinesCsvReader.GetSurfaceLinesCount() into CriticalFileReadException. * PipingSurfaceLinesCsvImporter handles thrown CriticalFileReadException when retrieving the number of available surfacelines. Related to Issue [WTI-20] git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@339 5a3db67b-de53-47b5-99c8-a1c30a6650e2