Choose a parent group when creating a new group
Problem
When you create a new group there is no way to select its parent group. This means you can only create subgroups from a button located in the parent's home.
Design
We add a dropdown where you can select a parent group. This dropdown show only groups you manage. It's default value is None (optional).
When the user selects a value for a parent group, the non-editable part of the path gets updated.
The next field in the form is for the group's name.
When the user enters a name, the frontend automatically generates a path in all lowercase. The user can later manually edit this path if they want to.
