[Additions]
*Added log out from GREE account function.
*Added Nicknames for Guest Users.
*Added how to contact us description in Config Menu.
*Added Notifications ON/OFF button in Config Menu.

[Fixes]
*Changed rankings display order.
*Fixed Facebook Ranking information bug.
*Increased Facebook Ranking limit, showing now up to #50.
*Fixed bug where players got stuck in the corners of the stage.
*Fixed various bugs and made other minor improvements.