* Extended DataGridViewControl with possibility of specifying a tooltip in order to explain why certain cells are disabled. * HydraulicBoundaryLocationsView updated such that custom imported hydraulic boundary locations cannot be calculated any more. ** Column is disabled with tooltip explaining why. * Improved validation message for custom hydraulic boundary locations to prevent calculating with custom imported hydro locations for failure mechanisms that required coupled hydraulic boundary location databases. Related to Issue [WTI-1013] git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/branches/CustomHydraulicBoundaries@6933 5a3db67b-de53-47b5-99c8-a1c30a6650e2