detsta import improvements, procurement changes

backend/controllers/ProductController.php

@@ -12,6 +12,7 @@ use common\models\Account;
 use common\models\ProductCategory;
 use backend\models\ProductStatisticsSearch;
 use PHPExcel;
+use yii\helpers\Url;
 
 /**
  * ProductController implements the CRUD actions for Product model.
@@ -47,6 +48,8 @@ class ProductController extends \backend\controllers\BackendController
         $searchModel = new ProductSearch();
         $dataProvider = $searchModel->search(Yii::$app->request->queryParams);
 
+        Url::remember(Url::current(),"product_index");
+        
         return $this->render('index', [
             'searchModel' => $searchModel,
             'dataProvider' => $dataProvider,