Download all pictures from wall post on VK, preserving the order.

For example we have a wall post on VK:

And we can put download icon somewhere. When clicked, where will be option to download all pictures from wall post.

Using folder choose dialog, prompt user for directory there all this pictures will be downloaded. When download all pictures.

To preserve order, file name of pictures must be like this: [picture_number_in_order]_[picture_name].jpg