Added a function for rewriting links to images that are in product descriptions during import.

Added a function for rewriting links to images that are in product descriptions during import. This function allows, when importing products, to compare the path to the downloaded images and the same images specified in the product description. If similar links are found, they will be replaced with the new path obtained after downloading the images.

Updated image compression module. Compression for JPEG images improved by 3 times.
Added the ability to use Pixel Facebook - automatically. You only need to specify the pixel ID of Facebook.
Added Widget for simplified footer management (bottom block)