anchor.diff:              <li><a href="#">Люди</a></li>
             </ul>
             <ul class="nav navbar-nav navbar-right">
  -            <li class="active"><a href="./">Вход <span class="sr-only">(current)</span></a></li>
  -            <li><a href="#">Выход</a></li>
  +            <% if current_user %>
  +                <li><%= link_to 'Выход', destroy_user_session_path, method: :delete %></li>
  +            <% else %>
  +                <li><%= link_to 'Вход', new_user_session_path, method: :get %></li>
  +                <li><%= link_to 'Регистрация', new_user_registration_path, method: :get %></li>
  +            <% end %>
             </ul>
           </div>
         </div>
  
positive.code:       <%= yield %>
      </div>
  
    </div> <!-- /container -->
    </body>
  </html>
  
negative.code:             <span class="icon-bar"></span>
              <span class="icon-bar"></span>
            </button>
            <a class="navbar-brand" href="/"><%= t('application_name') %></a>
          </div>
          <div id="navbar" class="navbar-collapse collapse">
            <ul class="nav navbar-nav">
  