Prepare for future translation of the application

assets/js/common/shorcuts.js

@@ -303,4 +303,13 @@ async function showConfirmDialog(msg) {
             res(c == true);
         });
     })
+}
+
+/**
+ * Prepare for potential future translation system
+ * 
+ * @param {String} input Input string
+ */
+function tr(input) {
+    return input;
 }