Convert raw SQL in Spree::Zone.with_member_ids to arel
Convert raw SQL in Spree::Zone.with_member_ids to arel

Makes the code look nicer and indentation easier.
Also add an early return if neither `country_ids` nor
`state_ids` is `present?`.

Arpsara/solidus,Arpsara/solidus,pervino/solidus,pervino/solidus,jordan-brough/solidus,jordan-brough/solidus,jordan-brough/solidus,pervino/solidus,jordan-brough/solidus,pervino/solidus,Arpsara/solidus,Arpsara/solidus