limit translation of menu items to specially marked ones

fixes the bug that variable names for which translations exist are shown in their translation in drop-down menus

HISTORY.md

@@ -8,6 +8,7 @@
 
 ### 2019-11-04
 * new dev version
+* morphic: limit translation of menu items to specially marked ones
 
 ## v5.3.0:
 * **New Features:**

snap.html

@@ -4,7 +4,7 @@
         <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
         <title>Snap! Build Your Own Blocks 5.3.1 - dev -</title>
         <link rel="shortcut icon" href="src/favicon.ico">
-        <script type="text/javascript" src="src/morphic.js?version=2019-10-29"></script>
+        <script type="text/javascript" src="src/morphic.js?version=2019-11-04"></script>
         <script type="text/javascript" src="src/widgets.js?version=2019-10-16"></script>
         <script type="text/javascript" src="src/blocks.js?version=2019-11-02"></script>
         <script type="text/javascript" src="src/threads.js?version=2019-11-02"></script>

src/morphic.js

@@ -1178,7 +1178,7 @@
 
 /*global window, HTMLCanvasElement, FileReader, Audio, FileList, Map*/
 
-var morphicVersion = '2019-October-29';
+var morphicVersion = '2019-November-04';
 var modules = {}; // keep track of additional loaded modules
 var useBlurredShadows = getBlurredShadowSupport(); // check for Chrome-bug
 
@@ -8204,8 +8204,12 @@ MenuMorph.prototype.addItem = function (
         * an icon (either a Morph or a Canvas)
         * a tuple of format: [icon, string]
     */
+    var lbl = labelString || 'close';
+    if (action instanceof Array && action.length === 1 && isString(action[0])) {
+        lbl = localize(action[0]);
+    }
     this.items.push([
-        localize(labelString || 'close'),
+        lbl,
         action || nop,
         hint,
         color,