Adding Valentine Venture random team selection

Added the random team selection for the new Seasonal ladder for 
February Valentine Venture (randomSeasonalVVTeam).
It's a doubles ladder that chooses three couples for each player.
Addding new Seasonal ladder Valentine Venture

Adding the format for the new Seasonal ladder, 
Valentine Venture, and also commenting Wonder Winterland.
Merge pull request #162 from Joimer/patch-1

Adding new Seasonal ladder Valentine Venture