bug 52930, r=matt, sr=alecf, a=blizzard, sync up dtd with internal one used in mozilla/profile/defaults/panels.rdf before I have panels.rdf use this dtd

xpfe/components/sidebar/resources/locale/en-US/local-panels.dtd

@@ -24,6 +24,7 @@
 <!ENTITY sidebar.whats-related.label  "What's Related">
 <!ENTITY sidebar.search.label         "Search">
 <!-- LOCALIZATION NOTE sidebar.tinderbox.label: DONT_TRANSLATE -->
-<!ENTITY sidebar.tinderbox.label      "Tinderbox">
-<!ENTITY sidebar.bookmarks.label      "Bookmarks">
-<!ENTITY sidebar.history.label        "History">
+<!ENTITY sidebar.tinderbox-seamonkey.label  "Tinderbox: SeaMonkey">
+<!ENTITY sidebar.tinderbox-ports.label      "Tinderbox: SeaMonkey-Ports">
+<!ENTITY sidebar.client-bookmarks.label     "Bookmarks">
+<!ENTITY sidebar.client-history.label       "History">