Undefined index: group in views_handler->ui_name() if field has no bundles and view using that field is exported

So, there may be someting more happening here --- when the field instance are later made in same request, a view was still bugged and couldn't figure out what catch to clear. But switching to this seemed to totally fix it.

That didn't work and had unintended conscquences (defaulting to bundle group broke), so instead how about not have views integration for a field with no bundles?

Various other's call this function without checking if it returns a result, so return array(); instead of null to satisfy them