Don't display an error when the theme supports widgets but not menus
|Reported by:||nacin||Owned by:|
Currently we display an annoying red bar when the theme doesn't support menus, but does support widgets.
Let's only have a bar (and make it yellow) before we've done anything. Once we have a menu, we can re-use the theme locations box to say "The current theme does not natively support menus, but you can use the "Custom Menu" widget to add any menus you create here to the theme's sidebar."
Note that this would not be a new string.