Joker cardv3

Joker "card"
After week 9 the player is allowed to use the joker card anytime he wants, but only once during the entire competition.
The player will have to chose from 3 possible benefits.
- +500points for the player that week.
- -500points to the player in the above position (not applyable the joker user is ranked #1)
- 500/1000 are deduced from the player's score and he is allow to ha