Feature Request: multiple levels of nesting with Form & List Pack

[bropa]

To implement a common catalog/category view, it would be very helpfully to make it possible to set a list in list and in child list also a list (list > list > list). Until now it does not work. (For example: 1. list to display category description of parent category, in this list is insert a 2. list to display descriptions of child categories, in list for child categories set 3. list to display articles related to these (child)categories.)