anchor.diff:      <h6>Settings</h6>
       <% @table.columns.each do |column| %>
         <label class='column-name'>
  -        <%= check_box_tag(column.name, nil, column_is_checked?(column.name), class: "#{column.name}") %>
  +        <%= check_box_tag(column.name, nil, column_is_checked?(@table.name, column.name), class: "#{column.name}") %>
           <%= column.name %>
         </label>
       <% end %>
  
positive.code:           <th class='delete_td'></th>
          <% end %>
          <% @table.columns.each do |column| %>
            <th class="column_<%= column.name %>" style=<%= display_style(column.name) %>>
              <%= sortable column.name %>
            </th>
          <% end %>
  
negative.code:           <% end %>
  
            <% @table.columns.each do |column| %>
              <td class="column_<%= column.name %>" style=<%= display_style_column(@table.name, column.name) %>>
                <% name = column.name %>
                <%= format_value(column, record[name]) %>
              </td>
  