HtmlContentDigger: repair html-strings with chars > 127 (not ascii)
Limaki.View.FavoriteManager: store autoview sheet in DisplayHistory
Limaki.View.XwtBackend.XwtMessageBoxShow: change title/text, bug if buttons YesNo: only yes is shown
Limaki.View.DragDrop: minor fixes
/Limaki.View.XwtBackend.XwtConceptUseCaseComposer: dispose useCase