Allow Applying Coupons to Carts
|Assignee:||Pavan Rikhi||% Done:|
|Target version:||v2.0.0 - Post-Migration Issues|
Currently, we can only apply coupons during checkout. It'd be nice to be able to do this from the Cart page as well.
Applying should save the CouponId to the cart table.
Should carts that don't meet the minimum order simply have a warning, or show an error?