New content function within containeritem for easy text manipulation

Change-Id: If4ca3bb317af35449a25b9924501c64f19a7c95e
diff --git a/dev/js/src/menu.js b/dev/js/src/menu.js
index 857c2db..dc998d1 100644
--- a/dev/js/src/menu.js
+++ b/dev/js/src/menu.js
@@ -191,6 +191,8 @@
     },
     
     // Initialize the item list
+    // returns true if the length of the resulting list is at least 1
+    // and there was a prefix value. Returns true if there was no prefix value set.
     _initList : function () {
       // Upon change also update alwaysmenu.js please
       const t = this;