ENGCOM-1035: [Foward-Port of #14156] Add website- and storeview-code in stores admin grid #14157

 - Merge Pull Request #14157 from aschrammel/magento2:2.3-develop
 - Merged commits:
   1. 6f73126
   2. 1e5745d
   3. 8004cc5

Author: magento-engcom-team

app/code/Magento/Backend/Block/System/Store/Grid/Render/Group.php

@@ -27,6 +27,7 @@ public function render(\Magento\Framework\DataObject $row)
         $this->getUrl('adminhtml/*/editGroup', ['group_id' => $row->getGroupId()]) .
         '">' .
         $this->escapeHtml($row->getData($this->getColumn()->getIndex())) .
-        '</a>';
+        '</a><br />'
+        . '(' . __('Code') . ': ' . $row->getGroupCode() . ')';
     }
 }

app/code/Magento/Backend/Block/System/Store/Grid/Render/Store.php

@@ -27,6 +27,7 @@ public function render(\Magento\Framework\DataObject $row)
         $this->getUrl('adminhtml/*/editStore', ['store_id' => $row->getStoreId()]) .
         '">' .
         $this->escapeHtml($row->getData($this->getColumn()->getIndex())) .
-        '</a>';
+        '</a><br />' .
+        '(' . __('Code') . ': ' . $row->getStoreCode() . ')';
     }
 }

app/code/Magento/Backend/Block/System/Store/Grid/Render/Website.php

@@ -24,6 +24,7 @@ public function render(\Magento\Framework\DataObject $row)
         $this->getUrl('adminhtml/*/editWebsite', ['website_id' => $row->getWebsiteId()]) .
         '">' .
         $this->escapeHtml($row->getData($this->getColumn()->getIndex())) .
-        '</a>';
+        '</a><br />' .
+        '(' . __('Code') . ': ' . $row->getCode() . ')';
     }
 }

app/code/Magento/Store/Model/ResourceModel/Website/Collection.php

@@ -138,11 +138,11 @@ public function joinGroupAndStore()
             $this->getSelect()->joinLeft(
                 ['group_table' => $this->getTable('store_group')],
                 'main_table.website_id = group_table.website_id',
-                ['group_id' => 'group_id', 'group_title' => 'name']
+                ['group_id' => 'group_id', 'group_title' => 'name', 'group_code' => 'code']
             )->joinLeft(
                 ['store_table' => $this->getTable('store')],
                 'group_table.group_id = store_table.group_id',
-                ['store_id' => 'store_id', 'store_title' => 'name']
+                ['store_id' => 'store_id', 'store_title' => 'name', 'store_code' => 'code']
             );
             $this->addOrder('group_table.name', \Magento\Framework\DB\Select::SQL_ASC)       // store name
                 ->addOrder(