Changed precision of LimitedPrecisionHelper to half of 10^-numberOfDecimals for stricter testing. Improved comparison of shift and standard deviation when combining coverage layers. Updated log text. Moved Stijghoogte property in PipingInputContextProperties. Related to Issue [WTI-687] git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@4649 5a3db67b-de53-47b5-99c8-a1c30a6650e2