anchor.diff:  
           <hr>
         <% end %>
  -    <% end %>
  +    </div>
     </div>
  -</div>
  -
  +<% end %>
  
positive.code:   <li><a href="#new">Create new reference</a></li>
  </ul>
  
  <div class="tab-content">
    <div class="tab-pane fade in active reference_search_form" id="search">
      <%= nested_form_for [:admin, @taxon_concept], :remote => true do |f| %>
        <label>Search by title, author or year:</label>
        <%= text_field_tag 'reference_search', nil, :class => 'typeahead' %>
  
  
negative.code:           <label>Is Standard?</label>
          <% end %>
        <% end %>
      </div>
  
      <div class="tab-pane fade" id="new">
        <%= f.link_to_add "Add a reference", :references %>
  
        <% f.fields_for :references do |ff| %>
  