Make Order.line_items ordering more deterministic
Make Order.line_items ordering more deterministic

Mostly for specs.
It would be nice to not even have this default ordering imo.

Conflicts:
	core/app/models/spree/order.rb

grzlus/solidus,grzlus/solidus,devilcoders/solidus,pervino/solidus,Arpsara/solidus,forkata/solidus,richardnuno/solidus,bonobos/solidus,lsirivong/solidus,jordan-brough/solidus,devilcoders/solidus,Senjai/solidus,jsurdilla/solidus,lsirivong/solidus,jordan-brough/solidus,Senjai/solidus,athal7/solidus,jsurdilla/solidus,pervino/solidus,Arpsara/solidus,xuewenfei/solidus,xuewenfei/solidus,devilcoders/solidus,ckk-scratch/solidus,devilcoders/solidus,scottcrawford03/solidus,athal7/solidus,Arpsara/solidus,athal7/solidus,grzlus/solidus,bonobos/solidus,athal7/solidus,jordan-brough/solidus,bonobos/solidus,forkata/solidus,pervino/solidus,xuewenfei/solidus,forkata/solidus,ckk-scratch/solidus,lsirivong/solidus,Senjai/solidus,scottcrawford03/solidus,richardnuno/solidus,jsurdilla/solidus,scottcrawford03/solidus,bonobos/solidus,grzlus/solidus,lsirivong/solidus,richardnuno/solidus,ckk-scratch/solidus,pervino/solidus,ckk-scratch/solidus,xuewenfei/solidus,forkata/solidus,jsurdilla/solidus,scottcrawford03/solidus,Arpsara/solidus,Senjai/solidus,jordan-brough/solidus,richardnuno/solidus