ClockFace_menu: add "powerSave" menu option

modules/ClockFace.md

@@ -208,7 +208,7 @@ let menu = {
   /*LANG*/"< Back": back,  
 };
 require("ClockFace_menu").addSettingsFile(menu, "<appid>.settings.json", [ 
-  "showDate", "loadWidgets"
+  "showDate", "loadWidgets", "powerSave",
 ]);
 E.showMenu(menu);
 

modules/ClockFace_menu.js

@@ -11,12 +11,16 @@ exports.addItems = function(menu, callback, items) {
     const label = {
       showDate:/*LANG*/"Show date",
       loadWidgets:/*LANG*/"Load widgets",
+      powerSave:/*LANG*/"Power saving",
     }[key];
     switch(key) {
+      // boolean options which default to true
       case "showDate":
       case "loadWidgets":
-        // boolean options, which default to true
         if (value===undefined) value = true;
+        // fall through
+      case "powerSave":
+        // same for all boolean options:
         menu[label] = {
           value: !!value,
           onchange: v => callback(key, v),