Bug 1364445 - Add localization comment to moreMenu.label r=mikedeboer

MozReview-Commit-ID: ErG9WjkysHM

--HG--
extra : rebase_source : d7bfafb6b08ad899a3f657ea8cca877c20b7d6aa

browser/locales/en-US/chrome/browser/browser.dtd

@@ -398,6 +398,9 @@ These should match what Safari and other Apple applications use on OS X Lion. --
 <!ENTITY customizeMenu.addMoreItems.label "Add More Items…">
 <!ENTITY customizeMenu.addMoreItems.accesskey "A">
 
+<!-- LOCALIZATION NOTE (moreMenu.label) This label is used in the new Photon
+    app (hamburger) menu. When clicked, it opens a subview that contains
+    secondary commands. -->
 <!ENTITY moreMenu.label "More">
 
 <!ENTITY openCmd.commandkey           "l">