spree/spree — pull request #851 by dkonishi (2011-12-07 16:06:26+00:00)
Title: Failure when deleting a taxonomy with associated taxons

When we delete a taxonomy, activerecord deletes all associated taxons, but the nested_set gem tries to use theses deleted records (to recalculate the set).
So we delete the root taxon and let to nested_set gem the responsibility of deleted all children taxons.