adding localization for bug 30456.

R=law

suite/browser/navigatorOverlay.xul

@@ -376,10 +376,10 @@ END of Deprecated -->
 		</menupopup>
     </menu>
       
-  <menu accesskey="t" id="tasksMenu"/>
+  <menu id="tasksMenu"/>
   
-  <menu accesskey="h" id="menu_Help"/>
-
+  <menu id="menu_Help"/>
+  <menu accesskey="&helpMenuCmd.accesskey;" id="menu_Help"/>
   // Menu for testing.
   <menu accesskey="d" value="&debugMenu.label;">
     <menupopup>

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

@@ -175,6 +175,7 @@
 <!ENTITY manBookmarksCmd.commandkey "b">
 
 <!ENTITY helpMenuCmd.label "Help">
+<!ENTITY helpMenuCmd.accesskey "h">
 <!ENTITY helpContentsCmd.label "Help Contents">
 <!ENTITY howTutorialCmd.label "How to Tutorial">
 <!ENTITY helpChannelCmd.label "Help Channel">