add communicator hook in overlay, annotate navigator hook in overlay

xpfe/browser/resources/content/navExtraOverlay.xul

@@ -19,9 +19,9 @@ Rights Reserved.
 
 Contributor(s): ______________________________________. -->
 
+<!-- DO NOT REMOVE OR ADD TO THIS FILE! -->
+
 <overlay id="navExtraOverlay"
          xmlns:html="http://www.w3.org/TR/REC-html40"
 	 xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
-
-</overlay>
+         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"/>

xpfe/browser/resources/content/navigator.xul

@@ -28,6 +28,7 @@ Contributor(s): ______________________________________. -->
 <?xul-overlay href="chrome://communicator/content/sidebar/sidebarOverlay.xul"?>
 <?xul-overlay href="chrome://navigator/content/NavSecurityOverlay.xul"?>
 <?xul-overlay href="chrome://navigator/content/navExtraOverlay.xul"?>
+<?xul-overlay href="chrome://communicator/content/communicatorOverlay.xul"?>
 
 <!DOCTYPE window [
 <!ENTITY % brandDTD SYSTEM "chrome://global/locale/brand.dtd" >