Modified test_bobura::oudia_diagram_dialog.
Implemented bobura::oudia_diagram_dialog.
Implemented bobura::model::serializer::select_oudia_diagram.
Corrected #includes.
Added message catalog items.
Implemented tetengo2::detail::windows::message_handler_detail::widget.
Implemented tetengo2::detail::windows::message_handler_detail::widget.
Implemented tetengo2::gui::message::mouse_observer_set.
Implemented bobura::oudia_diagram_dialog.
Modified English expressions.