$theme : string
Controller for handling new QuickAppsCMS installations.
This controller starts the installation process for a new QuickAppsCMS setup.
_getTester() : \Installer\Utility\ServerTest
Gets an instance of ServerTest class.
_step(null|string $check) : boolean
Check if the given step name was completed. Or marks current step as completed.
If $check is set to NULL, it marks current step (controller's action name) as completed. If $check is set to a string, it checks if that step was completed before.
This allows steps to control user navigation, so users can not pass to the next step without completing all previous steps.
Name of the step to check, or false to mark as completed current step