Add psalm and cs-fixer with fixes

appinfo/app.php

appinfo/routes.php

composer.json

composer.lock

docker/webapppassword.config.php

lib/AppInfo/Application.php

lib/Config/Config.php

lib/Connector/Sabre/CorsPlugin.php

lib/Controller/AdminController.php

lib/Controller/PageController.php

lib/Settings/Admin.php

lib/Settings/Section.php

lib/Utility/PsrLogger.php

templates/admin.php

templates/index.php

tests/Integration/AppTest.php

tests/Unit/Controller/PageControllerTest.php

tests/bootstrap.php