anchor.diff:      </tbody>
       <tfoot>
         <tr>
  -        <th>In Datafile:</th>
  +        <th>In Data file(s):</th>
           <% @header.each do |name,datafile_ids| %>
           <td>
             <ul>
  
positive.code:   jQuery('#compounds_attributes tbody').on( 'click', 'tr', function () {
      jQuery(this).toggleClass('selected');
    });
   
    table.buttons().container().insertBefore( '#compounds_attributes_filter' );
  });
  </script>
  
negative.code:       <% @compounds_hash.each do |id,datafile_attributes| %>
        <tr data-compoundid="<%= id %>">
          <td>
            <!-- normalized id value -->
            <%= id %>
          </td>
          <% @header.keys.each do |name| %>
          <td>
            <% datafile_attributes.each do |file_id,attributes| %>
              <% if attributes.has_key? name %>
                    <% @@compound_prefix = I18n.t('special.compound_id_prefix') %>
                    <% if (attributes[name] =~ /#{@@compound_prefix}[-_][a-zA-Z]+\d+/i) %>
                       <%= cell_link(attributes[name].to_s, file_id) %>
                        <%  %>
                    <% else %>
                        <%= attributes[name] %>
                    <% end %>
                    <% break %>
              <% end %>
            <% end %>
          </td>
  