Switch to side-by-side view

--- a/Allura/allura/templates/widgets/edit_post.html
+++ b/Allura/allura/templates/widgets/edit_post.html
@@ -6,6 +6,7 @@
            value="{{value and (value.subject or '(no subject)')}}"/>
     {% endif %}
     {{widget.display_field_by_idx(0)}}
+    <input type="hidden" class="original_value" value="{{value.text}}">
     <span class="arw"><span></span></span><br/>
     <div class="attachment_form_fields" style="display:none; padding: 5px 0;">
       <input type="file" class="text" name="{{att_name}}" {% if att_id %}id="{{att_id}}"{% endif %}/>