Use '@return $this' instead of '@return self' for document fluent interfaces in ApplicationBootstrap.php
Add setup related utility functions to ApplicationBootstrap.php
Use the setup related utility functions in AuthenticationController.php
Optimize imports in AuthenticationController.php
Use the requiresSetup variable instead of configMissing in login.phtml
Web: Load setup module if necessary
Do not use a new function for getting the configuration directory in our web wizard
Fix the default configuration path in our web wizard
Do not validate the mode of the setup.token

Relying on the mode of the configuration directory must be sufficient.