Commerce: Item Group shown when empty

[Tom S.]

When all the items inside a group are hidden from a user in the store, the group itself should be hidden as well.

Or at the very least give me the option to hide the group from the user.

So, if I have a group called "t-shirts"" and I hide all the items inside that group from guests. They still see the "t-shirt" group in the store, but if they click it, it's empty.

An alternative is to enable us to leave a custom message such as "Register to see our t-shirts".