Fix EZP-22378: Reflect new repository configuration in SetupWizard

https://jira.ez.no/browse/EZP-22378

Also reflected new session name format ([EZP-22318](https://jira.ez.no/browse/EZP-22318)) and made Stash use appropriate `keyHashFunction` if installing on Windows ([EZP-20923](https://jira.ez.no/browse/EZP-20923)).