Hide "Show in Status Bar" checkbox, if status bar isn't accessible
Correct changelog: works fine in Classic Theme Restorer 1.1.8+
(without any changes)
But our fixes for Classic Theme Restorer 1.1.7 and older are still here
Update changelog: "Show in Status Bar" in Firefox 29+
Mark compatible with Firefox 32.0a1 and SeaMonkey 2.29a1