Update notes for Dec 06

Major 1. Fixed car wheel physics (oversteering, uncontrolled slipping, helpless counter steering etc). Also updated all tuned tires to reflect the changes. 2. Updated RaceTrack - now it's a bit bumpy and tilted on turns. 3. Added feature to auto reduce visual quality when FPS is low (i.e. decrease screen resolution, quality level, disable post-processing and all kind of reflections).

Minor 1. Updated car collisions (Visual and performance improvements). 2. Traffic drivers are ready to connect the race only if they are driving co-lane and were not affected by any incidents. 3. Added explicit message when out of road to press "Return to road" key :) 4. Fixed issue with screen resolution which was not saved/restored. Limited screen resolutions to only supported set. 5. Updated RaceTrack - now it's a bit bumpy and tilted on turns. 6. Updated DragStrip - made it a bit bumpy too. 7. Added general setting "Enable Post-Processing" to "Advanced" menu to toggle all the post-processing in one place (Disable for better performance). 8. Moved "Keyboard/Steering Sensitivity" to "Keyboard" menu from "Advanced". 9. Updated all Quality presets. Even "Very low" quality is still playable with better performance.