Added a function for selecting ready-made color schemes for templates «templates_universal_flex».

Added a function for selecting ready-made color schemes for templates «templates_universal_flex». The color can be specified when creating a store, as well as in the "Design Editor", in the «Style Catalog» tab.

Added a function for selecting ready-made color schemes for templates «templates_universal_flex».

Added autocomplete product ID in sales statistics when changing the list of ordered products.
Added the ability to specify an additional SMTP server for sending via the Database of e-mail addresses.
Added [product_group_id] for Google Merchant, as well as a field for specifying the Type of variation.