More tweaks to the sponsor system

Today we have added a few more tweaks to the generation of sponsorship offers

1. Amounts for league placing sponsorship bonuses significantly increased
2. Added 5th place as an option in league placing sponsorship bonuses
3. "X wins in a row" sponsorship bonuses with up to 9 wins in a row (with corresponding higher prize amounts)
4. Greater variation in sponsorship base amounts
5. Cooldown time after getting new sponsorship offers reduced to 32 hours