Ensure Deleting an event, removes all its fixtures. but get confirmation if there are any match results

Need to have:
Delete fixture, deletes all the results, but asks for confirmation and mentions if there are match results
Delete event, deletes fixtures and teams. (asking for confirmation)
Delete club -> can't be done if there are any teams
Delete team -> can't be don if there are any fixtures
Delete organisation, asks for confirmation if there are any match results, deletes events, then removes clubs and player lists.