Added the ability to create automatic descriptions in product cards.

You can add automatic descriptions to product cards, in a separate block, specifying the placement, as well as the display method (in the form of plain text or using an Ajax request, if there is no need for such text to be indexed by search engines). The insertion of automatic descriptions will occur depending on the “Product Features” or its “Category”. As descriptions will be used "Short" or "Full descriptions" from the "Catalog of Articles". "Articles", as well as "Types of goods" and their "characteristics" must first be created.