Set defaults for promotion application results
Promotions: Make promotion codes display when viewing promotions in the back end
Promotions: Tidy up the UI and expand help info for promotion conditions and effects
Merge branch 'master' of https://github.com/spookandpuff/islay-shop
Correctly show codes for code based promotions, and allow them to be downloaded
Fix the check in unique code promo conditions
Add the paid? and paid_and_bonus? methods on orders
Display shipping instructions in order processing
Drop zero cents by default, when rendering item price summaries
Remove the drop_cents default, and make sure the summary is always a string
Properly check stock levels against SKU items
Provide an insufficient_stock method on SKUs
Made stock checking clearer against SKUs
Correctly report the added quantity when adding to basket
Sku items have a 'paid quantity' method
Move paid_quantity to the item purchasing module
Don't memoize paid_quantity on order items
Remove some debugging output.
Added a 'paid_original_product_total' to orders, and have the minimum spend condition check that