Ye Olde rc4

Additions:
- More ramps for knights.
- More birds.

Improves and fixes:
- Visibility and optimisation.
- Fixed some materials and collisions.
- Improved ambient sounds.
- Fixed some holes in the ground that some dummy made.

- Adjusted environment lighting, the map now is much brighter.
- Expanded gameplay area near the goal control point.
- Fixed clipping issues.