Bug 785581 Add in ID to the Web Development menu separator to make it easier for extensions to hook into our Tools menu r=IanN.

suite/common/tasksOverlay.xul

@@ -75,7 +75,7 @@
                     observes="sync-syncnow-state"
                     oncommand="gSyncUI.doSync(event);"
                     hidden="true"/>
-          <menuseparator/>
+          <menuseparator id="devToolsSeparator"/>
           <menu label="&webDevelopment.label;" accesskey="&webDevelopment.accesskey;">
             <menupopup id="toolsPopup">
               <menuitem id="javascriptConsole" label="&errorConsoleCmd.label;"