MarginManager incorrect trade direction for default long

[SimonHellings]

public int Long()
=> Short(State.SetupConfig.DefaultMarginShortOrderSize);

Should read
public int Long()
=> Long(State.SetupConfig.DefaultMarginLongOrderSize);

The default long is setting up a short trade. I would fix it, and commit it back to you, but I can't figure out how to get my local commit over to you! I can't seem to be able to push it anywhere, or do a pull request.