Change managed option groups to cleanup:always, update:unmodified

Aside from a lot of whitespace noise (because civilint), this changes the policy for updating managed records:

Before

Update: always would override any user changes. That's frustrating when you want to alter the label of something. Cleanup: unused is unnecessarily guarded. If the extension gets uninstalled, then these option values should definitely be deleted.

After

Update: unmodified respects user changes. Cleanup: always ensures the extension can be completely uninstalled.