Fixed tests of the ProfilesImporters: - Added test to verify behaviour when canceling at the two stages during the import. Test regarding cancelling while Creating structures is missing - Reverted changes related to HandleUserCancellingImport: messages are written by the LogImportCanceledMessage and handled adequately by the base - Removed obsolete Cancel call in the PipingSoilProfilesImporterTest Related to Issue [WTI-490]