Menu dropdown

base.html

<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
        <ul class="nav navbar-nav">
          <li><a href="{{ url_for('main.index') }}">{{ _('Página Inicial') }}</a></li>
          <li><a href="{{ url_for('main.explore') }}">{{ _('Explorar') }}</a></li>
        </ul>
        <ul class="nav navbar-nav navbar-right">
          {% if current_user.is_anonymous %}
            <li><a href="{{ url_for('auth.login') }}">{{ _('Entrar') }}</a></li>
            <li><a href="{{ url_for('auth.register') }}">{{ _('Inscrever-se') }}</a></li>
          {% else %}
            <li class="nav-item dropdown">
              <a href="#" class="nav-link dropdown-toggle" data-toggle="dropdown">{{ _('Registrar Fonte/Aplicação') }}</a>
              <div class="dropdown-menu">
                <a class="dropdown-item" href="{{ url_for('main.register_source') }}">{{ _('Registrar fonte de dados abertos') }}</a>
                <a class="dropdown-item" href="{{ url_for('main.register_software') }}">{{ _('Registrar aplicação') }}</a>
              </div>
            </li>
            <li><a href="{{ url_for('main.user', username=current_user.username) }}">{{ _('Usuário') }}</a></li>
            <li><a href="{{ url_for('auth.logout') }}">{{ _('Sair') }}</a></li>
          {% endif %}
        </ul>
      </div>