Bug 290825 - add back taskbarCmd.

r/sr=neil
a=asa
p=bugspam.Callek@gmail.com (Justin Wood)

editor/ui/locales/en-US/chrome/composer/editor.dtd

@@ -52,6 +52,8 @@
 <!ENTITY formattingtb.accesskey "f">
 <!ENTITY editmodeToolbarCmd.label "Edit Mode Toolbar">
 <!ENTITY editmodetb.accesskey "E">
+<!ENTITY taskbarCmd.label "Status Bar">
+<!ENTITY taskbarCmd.accesskey "S">
 
 <!-- Format menu items -->
 <!ENTITY formatMenu.label "Format">