fix ActiveRecord deprecation warning (#545)
fix ActiveRecord deprecation warning (#545)

ActiveRecord no longer wants us to pass SQL fragments to `order`. This
instead makes use of the underlying framework Arel to generate the
query.
swanson/stringer,nibble/stringer,geemus/stringer,dperson/stringer,geemus/stringer,nibble/stringer,swanson/stringer,geemus/stringer,nibble/stringer,swanson/stringer,dperson/stringer,dperson/stringer,swanson/stringer,dperson/stringer,geemus/stringer,nibble/stringer