Requires correct sequencing of the updated_at property.
Use to_url as in the save method. Also: - simplify the Tag model's interface: finder methods should not create objects. - Fix article spec to match new naming convention.
…crappy unsure code
…s tag renaming and create a Redirect from old to new URL
Moving config makes it more clear. Has_many has a :dependent => :nullify options, so we don't have to program it ourselves.