Cleanup test: - Replaced .Where().FirstOrDefault() statements with .FirstOrDefault(predicate) statements for readability and performance reasonsRelated to Issue [MWDAM-1584]
Fixed failing unit tests: fixed for the csv plugin importer as the PolderLevel property was moved from Location to ScenarioRelated to Issue [MWDAM-1584]
Added the requested check with log messages for errors found. Adapted test values as some of the test data used in these existing tests proved to contain coinciding characteristic points which is now no longer accepted.Related to Issue [MWDAM-300]