Money won by week based on accepted date, not completed date

[joshpelkey]

Update this to do modified_on, rather than created on. You should be winning/losing money based on when the bet is marked as complete

find total number proposed and accepted in that range

    proposed = ProposedBet.objects.filter(
        user=current_user, created_on__range=(
            start_date, end_date)).count()
    accepted = AcceptedBet.objects.filter(
        accepted_user=current_user, created_on__range=(
            start_date, end_date)).count()