Renuclose a20b

- Added a new route for BLU on last
- Other stuff

- Changed some of the trees into their tall varients.
- Elevated/Lowered some platforms/terrain.
- Changed BLU's second spawnroom's location.
- Other stuff

- Attempted to clip the trees
- Made some route changes
- Opened up a wall on point A
- Elevated/Lowered some ground on point B
- Changed the window textures
- Changed some ammo/health placements
- Other stuff

- (this is actually the a1a ver)

- Clipped some unclipped roofs