handle icons and themes in gui_settings class, not resource_manager * resource-manager.h, resource-manager.cc (resource_manager::config_icon_theme, resource_manager::icon): Move funtcions to gui-settings.h and gui-settings.cc. * Canvas.cc, QTerminal.cc, documentation-bookmarks.cc, documentation.cc, dw-main-window.cc, files-dock-widget.cc, find-files-dialog.cc, gui-settings.cc, gui-settings.h, history-dock-widget.cc, file-editor.cc, main-window.cc, octave-dock-widget.cc, octave-qobject.cc, qt-interpreter-events.cc, resource-manager.cc, resource-manager.h, variable-editor.cc: Change all uses.