Expanded the setting of the Number of added products per click.

Added automatic installation of the switch for the number of items added to the cart (Spinner).

Expanded the setting of the Number of added products per click.

Added function to restrict online payments, as well as notification about status changes.
New Feature: Split product block into two parts (when viewing product list)
Added the ability to update when importing the "quantity of goods in stock" by a mathematical expression.