Modified train line style in the selected state.
Corrected a compilation error.
Modified train line style in the selected state.
Corrected #includes.
Modified train line style in the selected state.
Implemented test_bobura::view::diagram::station_index_to_top().
Created bobura::view::diagram::normal_line_width(), bold_line_width() and selected_line_margin().
Created bobura::view::diagram::draw_selectable_line().
Corrected #includes.