og_subgroups 5.x-2.0

This upgrade adds several new enhancements.

1. Administration page for subgroups to allow for defining form elements.
2. New parent-child relationships according to node 131976. Thanks to ezra-g for his work.
3. Fix problem with anonymous users viewing memberlist. Issue 138911 (Thanks somebodysysop).

Note: The administrative form allows setting what types of Parents are allowed for a subgroup. Previous versions assumed the group setting. This version REQUIRES that you set one or more types for parents. If none are set, then NO Parent list will be provided on subgroup creation form.