Cart 'Save for later' link

As a shopper I would like to save some items in my cart for later by keeping them in cart but allowing to proceed with checkout without those items.

TD:

• Add new wish list type constant 'C' = cart save for later
• Add wish list link with type 'C' to cart items
• Modify AddSkuToWishList command so that when type is C the product is removed from cart and it is recalculated
• Add new component 'SaveForLaterList' on cart page (similar to shopping cart items) that will list WishList items with type 'C' and 'Add to cart' button