spree/spree — pull request #4416 by nskeip (2014-03-10 09:05:55+00:00)
Title: product.rb: Product#possible_promotions fix

Fixes #4395 an error on the product show page

Product#possible_promotions is to use `:promotion_id` instead `:activator_id` - because `activator_id` was renamed to `promotion_id`