update to use spree 1.3's order_populator
Routes should go at the end. Fix for products/search going to products#show due to routes. Same issue that spree_related_products had here: https://github.com/spree/spree_related_products/issues/58
Merge pull request #1 from assembled/spree-1-3-stable

update to use spree 1.3's order_populator