Remove the Edit Saved Item Rectangles menu item in favour of a toolbar button.

The limit of 3 saved item rectangles has been removed - you can now add as many as you want.
However, the 1 per town limit is now strictly enforced.

The saved item rectangle is now shown with a cyan border when editing town.

src/scenedit/scen.menus.win.cpp

@@ -79,7 +79,7 @@ void init_menubar() {
 		eMenu::TOWN_CREATE, eMenu::OUT_RESIZE, eMenu::NONE,
 		eMenu::SCEN_DETAILS, eMenu::SCEN_INTRO, eMenu::SCEN_SHEETS, eMenu::SCEN_PICS, eMenu::SCEN_SNDS, eMenu::NONE, eMenu::NONE,
 		eMenu::SCEN_SPECIALS, eMenu::SCEN_TEXT, eMenu::SCEN_JOURNALS, eMenu::SCEN_ADV_DETAILS,
-		eMenu::TOWN_IMPORT, eMenu::OUT_IMPORT, eMenu::SCEN_SAVE_ITEM_RECTS,
+		eMenu::TOWN_IMPORT, eMenu::OUT_IMPORT,
 		eMenu::TOWN_VARYING, eMenu::SCEN_TIMERS, eMenu::SCEN_ITEM_SHORTCUTS,
 		eMenu::TOWN_DELETE, eMenu::SCEN_DATA_DUMP, eMenu::SCEN_TEXT_DUMP,
 	};