Camera Chase and more

In this update we implemented a chase camera, more dynamic but less nauseating than the previous top down with tilting. A straight top down cam (with no tilting) is still available, for those who prefer, through the settings page. Please feel free to post feedbacks!

Other changes:

• Visible area in front of cars on chase camera was increased;
• From now on, in multiplayer coop mode, the team that scores is the one with last car alive;
• In each track, the players' car models and performance in free for all matches are now the same from missions;
• Overall improvements on textures quality;
• Now it's harder for players to lose control after a collision;
• Some improvements on UI.
• Several changes / fixes on sound department;
• Screen shakes are less frequent;
• Popcorn and skidmarks shaders fixed on dark model tracks;
• CPU opponents has more probability to lose control after a hit;