Added possibility to assert for log messages and log levels. Implemented IObservable on HydraulicBoundaryDatabaseContext to reroute attach/detach/notify to the assessmentSection instead. HydraulicBoundaryDatabaseImporter now works on the assessment section instead of the HydraulicBoundaryDatabaseContext. Refactored RingtoetsGuiPlugin to use IAssessmentSection rather than HydraulicBoundaryDatabaseContext in methods for opening a project file. Refactored to remove early returns in SelectDatabaseFile Added ProjectOpened listener to check for possibility to open the hydraulic database from the saved project. Refactored TreeNodeInfo tests so that dispose is taken out of the TearDown method so that verify can be called in the test rather than in the teardown. Related to Issue [WTI-329]