Display modal on page load and force reopen it on closed

force-display-modal.js

  window.hullAsyncInit = function() {
    function showDialog() {
      setTimeout(function() {
        if (!Hull.currentUser()) {
          Hull.emit('hull.login.showDialog');
        }
      }, 500);
    }          
    // Show dialog on page load
    Hull.on('hull.ships.ready', showDialog)
    // Reopen dialog when it's closed
    Hull.on('hull.login.dialogHidden', showDialog)
  }