[Evolution] Bug#591950: Bug#591950: Evolution categories are not editable (i.e., you cannot delete existing or add new categories)

[Arthur Machlas]

Here is a link to a a discussion on the evolution mailing list, where
a user cofirms on same version and another user says it does not
affect previous version. Perhaps this helps to narrow down cause.

http://www.listware.net/201007/evolution-list/54596-evolution-cannot-create-new-or-delete-existing-categories.html