Barcode lookup on item

Item edit form:

• Added to Barcode LookUp pop-up the next buttons:
  • Cancel button:
    • is always clickable;
    • after clicking on the button:
      • the pop-up closed without changes;
  • Add button:
    • is always clickable;
    • after clicking on the button:
      • the picture which was selected -> attaches to the item;
      • the picture is displayed on the Item edit form on the General tab.