Fix the behavior of the basket on Beatrix

It should be made that when reducing the number of positions to zero, the goods are removed from the basket.

Now, when you change the number (clicking on /-) the number of goods when reaching the minimum number is not removed (there is a separate link "Delete"), but you need to make sure that when reducing the number to zero, the product also disappeared (before this to display a pop-dialogue with confirmation "Exactly remove the goods from the basket?")