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 the ability to use Pixel Facebook - automatically. You only need to specify the pixel ID of Facebook.
BooStore.pro Implements Language-Specific CSS Splitting
Added "letter template" with a button for payment.