Fixed bug when count of favorites buttons changed.

shop/shopform.cpp

@@ -103,6 +103,13 @@ void ShopForm::loadButtons()
     Service<FavoritItem> srvFav;
     QMap<QString, FavoritItemPtr> btnMap;
 
+    foreach (QWidget *child, ui->favorites->findChildren<QWidget*>()) {
+        if (child->objectName() != "directSale")
+        {
+            delete child;
+        }
+    }
+
     foreach (FavoritItemPtr item, srvFav.all()) {
         btnMap[item->favButtonName()] = item;
     }