tnc-ba/strongTNC — pull request #176 by d22 (2014-05-24 23:02:29+00:00)
Title: Label for "group.parent = None"

![img](http://tmp.dbrgn.ch/screenshots/20140506_212906.png)

Right now the box shows `Select one...`, even though no parent group needs to be selected.

I think we should change this either to `None` or `Top Level`.

What do you prefer, @d22 @cfaessler?