move to external dtd

editor/ui/dialogs/content/EdTableProps.xul

@@ -1,14 +1,7 @@
 <?xml version="1.0"?>
 <?xml-stylesheet href="chrome://global/skin/" type="text/css"?> 
 <?xml-stylesheet href="chrome://editor/skin/EditorDialog.css" type="text/css"?>
-<!DOCTYPE window
-[
-
-<!ENTITY tableWindow.title "Table Properties">
-<!ENTITY tableTab.label "Table">
-<!ENTITY cellTab.label "Cells">
-
-]>
+<!DOCTYPE window SYSTEM "chrome://editor/locale/EditorTableProperties.dtd">
 
 <window class="dialog" title="&tableWindow.title;"
     xmlns:html="http://www.w3.org/TR/REC-html40"
@@ -36,6 +29,7 @@
       <html:div> This is the TABLE Tab </html:div>
     </box>
 <!-- end of table tab -->
+
 <!-- cell tab -->
 		<box align="vertical">
       <titledbutton value="CELL PANEL"/>