Improve how no data for files is displayed

opentech/apply/stream_forms/blocks.py

@@ -304,6 +304,9 @@ class MultiFileFieldBlock(UploadableMediaBlock):
         label = _('Multiple File field')
         template = 'stream_forms/render_multi_file_field.html'
 
+    def no_response(self):
+        return [super().no_response()]
+
 
 class FormFieldsBlock(StreamBlock):
     text_markup = RichTextBlock(group=_('Other'), label=_('Paragraph'))

opentech/apply/stream_forms/templates/stream_forms/render_file_field.html

 {% extends "stream_forms/render_field.html" %}
 {% block data_display %}
-    {% if data %}
+    {% if data.name %}
         <div class="wrapper">
             {% include "stream_forms/includes/file_field.html" with file=data %}
         </div>

opentech/apply/stream_forms/templates/stream_forms/render_multi_file_field.html

@@ -2,7 +2,7 @@
 {% block data_display %}
     <div class="wrapper">
     {% for file in data %}
-            {% include "stream_forms/includes/file_field.html" with file=file %}
+        {% include "stream_forms/includes/file_field.html" with file=file %}
     {% endfor %}
     </div>
 {% endblock %}