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>

resources/views/mail/form/confirmation-submission-notification.blade.php

@@ -17,9 +17,14 @@ As a reminder, here are your answers:
 --------------------------------------------------------------------------------
 
 **{{$field['name']}}**
-
+@if($field['type'] == 'files')
+<br/>
+@foreach($field['email_data'] as $link)
+<a href="{{$link['signed_url']}}">{{$link['label']}}</a> <br/>
+@endforeach
+@else
 {!! is_array($field['value'])?implode(',',$field['value']):$field['value']!!}
-
+@endif
 @endif
 @endforeach
 @endif