anchor.diff:        <%= link_to t(:sections), controller: 'sections' %>
       </li>
   
  -      <% if controller.controller_name == 'admins' ||
  -              controller.controller_name == 'students' ||
  -              controller.controller_name == 'tas' %>
  -
  -      <% end %>
  -
     <% else %>
       <li <% if controller.controller_name == 'assignments' ||
                 controller.controller_name == 'flexible_criteria' ||
  
positive.code:       <%= link_to t('notes.title'), notes_path %>
      </li>
    <% end %>
  </ul>
  
negative.code:         <% end %>>
        <%= link_to t(:home), controller: 'assignments' %>
     </li>
  
    <% end %>
  
    <% if @current_user.admin? || @current_user.ta? %>
  