Coupon and cart bug fix

Hey everyone, just a small patch update. With recurring coupons there was a bug where non-eligible items would have the applied coupon anyway. We've gone ahead and fixed this. For the small amount of users that have coupons on those servers, we are allowing them to stay as it was an issue on our end :)

Changelog

• Fixed recurring coupon bug
• Made respective coupons apply to their own products
• Multiple bug fixes and improvements