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/scenedit/scen.fileio.h

@@ -1,13 +1,13 @@
-void init_directories();
+
 void save_scenario();
 //void load_scenario();
 void augment_terrain(location to_create);
 //void load_outdoors(location which_out,short mode);
 //void load_town(short which_town);
-void import_town(short which_town,FSSpec temp_file_to_load);
+void import_town(short which_town,fs::path temp_file_to_load);
 void create_basic_scenario();
-void make_new_scenario(Str255 file_name,short out_width,short out_height,short making_warriors_grove,
-	short use_grass);
+void make_new_scenario(std::string file_name,short out_width,short out_height,bool making_warriors_grove,
+	bool use_grass);
 
 void oops_error(short error);
 //short init_data(short flag);