anchor.diff:    <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| %>
  +<%= nested_form_for [:admin, @taxon_concept], :remote => true do |f| %>
  +  <div class="tab-content">
  +    <div class="tab-pane fade in active reference_search_form" id="search">
         <label>Search by title, author or year:</label>
         <%= text_field_tag 'reference_search', nil, :class => 'typeahead' %>
   
  
positive.code: 
          <hr>
        <% end %>
      <% end %>
    </div>
  </div>
  
  
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| %>
  