Add ExportTooltip and DeleteMessagesTooltip properties to LocalizationManager and provide translations (EN, FR, DE, ES, UK). Update DashboardView.axaml to bind the export/delete icon tooltips to the localization strings so they can be translated.
Introduce ErrorDeletingTitle and SuccessfulDeletionMessage localization entries across English, French, German, Spanish, and Ukrainian files and expose corresponding properties in LocalizationManager. Update DashboardViewModel to use these localized strings (SuccessfulDeletionMessage via string.Format and ErrorDeletingTitle) instead of hardcoded messages when notifying the user and showing error dialogs.
