New map, fixes and improvements

Next update is here bringing new drift map. Here's what's new to this update: New [list] [*] Added a new desert drift circuit map [*] Added challenges for the new drift circuit [img]{STEAM_CLAN_IMAGE}/39590285/2e30a4ae3cc5ca9981bacc307b0bd094df33ff87.png[/img] [/list] Improved: [list] [*] Action Drift Camera is improved. It now follows the car in more physically based way and the weird rotation at low speed is removed [*] Other small improvements [/list] Fixed [list] [*] Fixed score in Free Drift mode not accumulated correctly [*] Fixed Mini Map in touge track [*] Wheels spin too fast in reverse gear [*] Other small fixes [/list]