anchor.diff:                </ul>
               </li>
   
  -            <li><a href="/dashboard/providers">Proveedores</a></li>
  -
             <% if session[:role] == 'Admin' %>
               <li class="dropdown">
                 <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Reportes<span class="caret"></span></a>
  
positive.code:                 <li><a href="/dashboard/courses">Cursos</a></li>
                  <li><a href="/dashboard/students">Estudiantes</a></li>
                  <li><a href="/dashboard/teachers">Profesores</a></li>
                </ul>
              </li>
  
  
negative.code:                 <li><a href="#">Ver reportes</a>
                </ul>
              </li>
            <% end %>
            </ul>
  
  