Multitrack challenge now supports ghosts!! ...a new track and other little things

Greetings!

We are very happy to have ghosts integrated in the Multitrack challenge now!! We will have it in the next round starting fri 21 :D Also in this update we have a new track of the Sand Dunes Pack called "Serrezuela"

This is the complete changelog:

Version 0.8.11

• Ghosts support in Multitrack challenge
• New message when the player has a new record in the championship
• Loading message when the game is waiting for ghosts

See you all on track!! ;)