fix dropdown menu on Windows-- it uses nw.js 0.14.7 which didn't include the...

fix dropdown menu on Windows-- it uses nw.js 0.14.7 which didn't include the "forEach" method for DOM nodelists

pd/nw/dialog_iemgui.html

@@ -554,11 +554,13 @@ function ok() {
 
 function change_width_and_height_labels() {
     [".mknob_steps", ".mknob_size"].forEach(function(sel) {
-        document.body.querySelectorAll(sel).forEach(function(e) {
+        Array.prototype.forEach.call(
+            document.body.querySelectorAll(sel), function(e) {
             e.setAttribute("data-i18n", "iem.prop" + sel);
         });
-        document.body.querySelectorAll(sel + "_tt").forEach(function(e) {
-            e.setAttribute("data-i18n", "[title]iem.prop" + sel + "_tt");
+	Array.prototype.forEach.call(
+            document.body.querySelectorAll(sel + "_tt"), function(e) {
+                e.setAttribute("data-i18n", "[title]iem.prop" + sel + "_tt");
         });
     });
 }

pd/nw/pd_canvas.js

@@ -498,7 +498,7 @@ var canvas_events = (function() {
                     && evt.target.parentNode.parentNode
                     && evt.target.parentNode.parentNode.id === "dropdown_list") {
                     li_array = evt.target.parentNode.querySelectorAll('li');
-                    li_array.forEach(function(e) {
+                    Array.prototype.forEach.call(li_array, function(e) {
                         e.classList.remove("highlighted");
                     });
                     evt.target.classList.add("highlighted");