Fix DropMenu prototype bootstrap mybb conflict

//   https://github.com/twbs/bootstrap/blob/master/js/dropdown.js
// riga 89 circa

function clearMenus(e) {
    if (e && e.which === 3) return
    $(backdrop).remove()
    $(toggle).each(function () {
      var $this         = $(this)
      var $parent       = getParent($this)
      var relatedTarget = { relatedTarget: this }

      if (!$parent.hasClass('open')) return

    //aggiungiamo il removeclass() a posto di trigger()
       $parent.removeClass('open');

      //$parent.trigger(e = $.Event('hide.bs.dropdown', relatedTarget))

      if (e.isDefaultPrevented()) return

    //  $this.attr('aria-expanded', 'false')
    //  $parent.removeClass('open').trigger('hidden.bs.dropdown', relatedTarget)
    })
  }