Have a mode which disables the knockouts

[PeterJCLaw]

When running the Virtual Competition we only have a schedule imported for those matches. Once those matches are scored the knockouts are shown, yet the matches there aren't actually correct. This is misleading both in regards the timing of the next matches as well as who will play in each.

One hack we've used in the past is to duplicate the last match of the league schedule, however this is easy to forget.

Ideally we'd hide the knockouts completely from at least the schedule in such cases.