Fix redirect add admin action and possible others.

[Maff-]

I noticed the 'Add Redirect' action was broken in the admin interface (illegal offset error), and it turns out the RedirectAdminListController makes a wrong call to AdminListController::doAddAction [1].

This was also the case in some other controllers, which I also fixed.

// RedirectAdminListController.php
public function addAction(Request $request)
{
    return parent::doAddAction($this->getAdminListConfigurator(), $request);
}

But the method signature has $type as the second parameter:

/**
 * Creates and processes the form to add a new Entity
 *
 * @param AbstractAdminListConfigurator $configurator The adminlist configurator
 * @param string                        $type         The type to add
 *
 * @return array
 */
protected function doAddAction(AbstractAdminListConfigurator $configurator, $type = null, Request $request = null)
{
    // ...
}

the third @param is missing btw

We could also add a check in the doAddAction method, but that seems very ugly and a bit unnecessary.

if ($request === null && $type instanceof Request) {
    $request = $type;
    $type = null;
}