Add a module for importing goods for OpenCard

On the website of the online store you need to add a module for importing goods for OpenCard. The download will be made by link csv (excel) with the ability to put a different percentage markup (from the price of wholesale + N %)
There should also be a discount from the price of the site for wholesale buyers in person. Office after authorization (admin)
Set the basket to wholesale and retail (it is just to correct)
Site backgrounds to remove and leave white