Update Settings Dialog

[MatthiasWM]

☐ eMate function key bar
☐ store and manage multiple screen settings
☐ store and manage multiple machine configurations
☐ launch machine, switch machine dialogs
☐ command line option to launch a specific machine
☐ snapshots and restore snapshot w/reboot
✓ added screen scale setting: the Newton screen can now be scaled at launch
✓ fix system menubar update: menus update to show PCMCIA card inserts
✓ fix macOS typical menu items: menus and toolbars can now be hidden. Hidden menus on macOS appear in the Mac typical screen menu instead

[MatthiasWM]

fix system menubar update: menu updates when PCMCIA cards are inserted or removed
fix macOS typical menu items: using Apple specific About menu