spree/spree — pull request #5536 by reinaris (2014-10-27 09:27:43+00:00)
Title: Only save taxon descendants when permalink changes

When you update a taxon if checks if the taxon descendants need to be updated too.

Why should we update the descendants if only the name changes?
It's only necessary if the permalink of the taxon changes.

If you have a lot of descendants taxons the save becomes really slow, if we only do this when necessary you can easily improve a taxon name without saving all the descendants.