Fa005 submissions file link in notifications (#298)

* fix: unsigned url in form email

* fix: signed file link in email

* fix: use limit function for file  label name

* feat: use signed url  for files in email and csv export

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Co-authored-by: Julien Nahum <julien@nahum.net>

app/Http/Controllers/Forms/FormSubmissionController.php

@@ -37,7 +37,8 @@ class FormSubmissionController extends Controller
             $formatter = (new FormSubmissionFormatter($form, $row['data']))
                 ->outputStringsOnly()
                 ->setEmptyForNoValue()
-                ->showRemovedFields();
+                ->showRemovedFields()
+                ->useSignedUrlForFiles();
             $tmp = $formatter->getCleanKeyValue();
             $tmp['Create Date'] = date("Y-m-d H:i", strtotime($row['created_at']));
             $allRows[] = $tmp;