Move passwordconfirmation to its own midleware

lib/composer/composer/autoload_classmap.php

lib/composer/composer/autoload_static.php

lib/private/AppFramework/DependencyInjection/DIContainer.php

...rk/Middleware/Security/PasswordConfirmationMiddleware.php

...e/AppFramework/Middleware/Security/SecurityMiddleware.php

...iddleware/Security/PasswordConfirmationMiddlewareTest.php

...pFramework/Middleware/Security/SecurityMiddlewareTest.php