Incorporated comments review 1359: - Adjusted DuneLocation exporter and writer tests: -- Simplified tests by introducing a TestDuneLocation and TestDuneLocationOutput that are specific for the exporter / writer tests -- Added several DuneLocation configurations to make up for the missing test cases - Simplified test in DuneErosionBoundaryCalculationActivityIntegrationTest by using a TestDuneLocation object - Renamed function in the TestDuneLocationOutput for consistency reasons Related to Issue [WTI-779]