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

rsrc/dialogs/save-before-quit.xml

@@ -0,0 +1,11 @@
+<?xml version='1.0' encoding='UTF-8' standalone='no'?>
+<?xml-stylesheet href="dialog.xsl" type="text/xsl"?>
+<dialog defbtn='save'>
+	<button name='save' type='regular' top='43' left='240'>Save</button>
+	<button name='cancel' type='regular' def-key='esc' top='43' left='175'>Cancel</button>
+	<button name='revert' type='regular' top='43' left='109'>Quit</button>
+	<pict type='dlog' num='16' top='6' left='6'/>
+	<text top='6' left='49' width='256' height='32'>
+		Do you want to save changes to your scenario before quitting?
+	</text>
+</dialog>