Tear out most of the legacy code in the scenario editor - see below for details

- All Carbon code is gone
- Many dialogs converted; some are still left unimplemented since they still need to be converted
- Menus converted to a xib file
- The giant arrays specifying the configuration of the special node dialog for each special node type have been replaced with maps and sets.

Changes to dialogs:
- pict choice dialog can now show picts of differing types; this was required for picking a monster graphic, as monsters of all sizes need to be shown in the same dialog
- string choice dialog can set the title, and properly shows the currently selected string
- LEDs now accept font format
- Fixed LED group's calculation of its rect
- Fixed LED group crashing if it has no selection
- Tabbing between text fields now works
- Fix display of larger monster graphics in dialogs
- Fix the script element content showing in the browser preview

osx/tools/winutil.h

@@ -34,4 +34,11 @@ public:
 	~ModalSession();
 };
 
+// System key
+#ifdef __APPLE__
+bool sf::Event::KeyEvent::*const systemKey = &sf::Event::KeyEvent::system;
+#else
+bool sf::Event::KeyEvent::*const systemKey = &sf::Event::KeyEvent::control;
+#endif
+
 #endif