in visit detail view link to edit patient added

smash/web/templates/visits/details.html

@@ -168,6 +168,7 @@
   </div><!-- /.box-body -->
 
   <div class="box-footer">
+    <td><a href="{% url 'web.views.subject_edit' visit.subject.id %}" type="button" class="btn btn-block btn-default">Edit subject</a></td>
     <a href="{% url 'web.views.subjects' %}" class="btn btn-block btn-default" onclick="history.back()">Back</a>
   </div><!-- /.box-footer -->
 </form>