Remove the arbitrary limits on the following quantities:

- Number of terrain types - as long as the last terrain in the list is unused, you can delete it
- Number of monster types - as long as the last monster in the list is unused, you can delete it
- Number of item types - as long as the last item in the list is unused, you can delete it
- Number of special items
- Number of strings (scenario, journal, outdoors, town)
- Number of signs (outdoors, town)
- Number of description rectangles (outdoors, town)
- Number of town entrances (outdoors)
- Number of dialog nodes (town); number of personalities per town is still limited, but since you can use personalities from any town and the number of towns is unlimited, you still have effectively unlimited personalities

Other related stuff:
- Fix ability to select nonexistent terrains/items/monsters from the palette
- Fix inability to find unused special strings in some cases
- Fix sometimes incorrectly selecting the current node as the next node in the chain, instead of a new node
- When cancelling from the special node dialog, it's a bit more intelligent about whether or not to drop nodes from the end of the list
- Edit string dialog now has a cancel button
- Save otherwise unused talk nodes if they contain strings, to avoid loss of data that might be important
- Fix scenario and journal strings loading incorrectly if some strings were blank
- Fix some issues with list modes activated by menu not appearing until the mouse moves over the window
- Fix incorrect instructions in list modes (it's alt-click, not command-click as the instructions indicated)
- Implement "erase town entrance" button and create a visual difference between town entrances with an assigned town and those without
- Fix inability to erase monsters after the first 60 in town
- Fix escape key accepting changes in the shop dialog, instead of cancelling
- Fix quest/shop list resetting to top after editing one

src/scenedit/scen.townout.cpp

@@ -364,74 +364,6 @@ void edit_sign(short which_sign,short picture) {
 	sign_dlg.run();
 }
 
-static bool save_roomdescs(cDialog& me, bool isTown, std::array<bool,16> str_do_delete) {
-	if(!me.toast(true)) return true;
-	int numDescs = isTown ? town->room_rect.size() : current_terrain->info_rect.size();
-	for(int i = 0; i < numDescs; i++) {
-		std::string id = "desc" + std::to_string(i + 1);
-		if(isTown) {
-			town->room_rect[i].descr = me[id].getText().substr(0,30);
-			if(str_do_delete[i])
-				town->room_rect[i].right = 0;
-		} else {
-			current_terrain->info_rect[i].descr = me[id].getText().substr(0,30);
-			if(str_do_delete[i])
-				current_terrain->info_rect[i].right = 0;
-		}
-	}
-	return true;
-}
-
-static void put_roomdescs_in_dlog(cDialog& me, bool isTown, std::array<bool,16> str_do_delete) {
-	int numDescs = isTown ? town->room_rect.size() : current_terrain->info_rect.size();
-	for(int i = 0; i < numDescs; i++) {
-		std::string id = std::to_string(i + 1);
-		std::ostringstream str;
-		bool active = true;
-		if(isTown && town->room_rect[i].right == 0) active = false;
-		if(!isTown && current_terrain->info_rect[i].right == 0) active = false;
-		if(str_do_delete[i]) active = false;
-		if(!active) {
-			str << "Not yet placed.";
-			me["del" + id].hide();
-		} else if(isTown) {
-			me["desc" + id].setText(town->room_rect[i].descr);
-			str << "X = " << town->room_rect[i].left << ", Y = " << town->room_rect[i].top;
-		} else {
-			me["desc" + id].setText(current_terrain->info_rect[i].descr);
-			str << "X = " << current_terrain->info_rect[i].left << ", Y = " << current_terrain->info_rect[i].top;
-		}
-		me["rect" + id].setText(str.str());
-	}
-}
-
-static bool delete_roomdesc(cDialog& me, std::string id, bool isTown, std::array<bool,16> str_do_delete) {
-	int item_hit = boost::lexical_cast<int>(id.substr(3));
-	me["desc" + id.substr(3)].setText("");
-	str_do_delete[item_hit - 1] = true;
-	put_roomdescs_in_dlog(me, isTown, str_do_delete);
-	return true;
-}
-
-void edit_roomdescs(bool town) {
-	using namespace std::placeholders;
-	std::array<bool,16> str_do_delete = {0};
-	int numDescs = town ? 16 : 8;
-	
-	cDialog room_dlg(town ? "edit-town-roomdescs" : "edit-out-roomdescs");
-	room_dlg["okay"].attachClickHandler(std::bind(save_roomdescs, _1, town, str_do_delete));
-	room_dlg["cancel"].attachClickHandler(std::bind(&cDialog::toast, &room_dlg, false));
-	for(int i = 0; i < numDescs; i++) {
-		std::string id = std::to_string(i + 1);
-		room_dlg["del" + id].attachClickHandler(std::bind(delete_roomdesc, _1, _2, town, str_do_delete));
-//		room_dlg["str" + id].attachFocusHandler(check_roomdesc_len);
-	}
-	
-	put_roomdescs_in_dlog(room_dlg, town, str_do_delete);
-	
-	room_dlg.run();
-}
-
 static bool save_town_num(cDialog& me, std::string, eKeyMod) {
 	if(me.toast(true)) me.setResult<short>(me["town"].getTextAsNum());
 	return true;
@@ -1122,15 +1054,15 @@ static bool talk_node_branch(cDialog& me, std::stack<node_ref_t>& talk_edit_stac
 	if(!save_talk_node(me, talk_edit_stack, false, true)) return true;
 	
 	int spec = -1;
-	for(int j = 0; j < 60; j++)
+	for(int j = 0; j < town->talking.talk_nodes.size(); j++)
 		if(town->talking.talk_nodes[j].personality == -1 && strnicmp(town->talking.talk_nodes[j].link1, "xxxx", 4) == 0) {
 			spec = j;
 			break;
 		}
 	
 	if(spec < 0) {
-		giveError("You have used all 60 available talk nodes. To create fresh dialogue, go back and reuse an old one.", &me);
-		return true;
+		spec = town->talking.talk_nodes.size();
+		town->talking.talk_nodes.emplace_back();
 	}
 	
 	talk_edit_stack.push({spec, town->talking.talk_nodes[spec]});
@@ -1164,7 +1096,8 @@ static bool select_talk_node_value(cDialog& me, std::string item_hit, const std:
 	return true;
 }
 
-void edit_talk_node(short which_node) {
+// Returns -1 if accepted, otherwise the node that was cancelled
+short edit_talk_node(short which_node) {
 	using namespace std::placeholders;
 	
 	std::stack<node_ref_t> talk_edit_stack;
@@ -1183,6 +1116,7 @@ void edit_talk_node(short which_node) {
 	put_talk_node_in_dlog(talk_dlg, talk_edit_stack);
 	
 	talk_dlg.run();
+	return talk_dlg.accepted() ? -1 : talk_edit_stack.top().first;
 }
 
 static void put_out_loc_in_dlog(cDialog& me, location cur_loc) {