Bug fix, prevent displaying 0000-00-00 00:00:00 as anything else in admin grids

Author: Anton Evers

app/code/Magento/Ui/Component/Listing/Columns/Date.php

@@ -53,7 +53,9 @@ public function prepareDataSource(array $dataSource)
     {
         if (isset($dataSource['data']['items'])) {
             foreach ($dataSource['data']['items'] as & $item) {
-                if (isset($item[$this->getData('name')])) {
+                if (isset($item[$this->getData('name')])
+                   && $item[$this->getData('name')] !== "0000-00-00 00:00:00"
+                ) {
                     $date = $this->timezone->date(new \DateTime($item[$this->getData('name')]));
                     $timezone = isset($this->getConfiguration()['timezone'])
                         ? $this->booleanUtils->convert($this->getConfiguration()['timezone'])