Issue #3317996 by phenaproxima: FixtureUtilityTrait's package manipulation methods need to take installation path into account
Issue #3314805 by phenaproxima, kunal.sachdev: Create a base class for UpdaterForm and UpdateReady to help run status checks and display the results
Issue #3314946 by omkar.podey: UpdateReady mistakenly assigns a special CSS class to all validation results