Fixed up the .nav a bit, kept at RC4

RC4

* Replaced the two assets from the Invasion assets pack with custom-made assets from Maxxy. The saucer is a duplicate of the official TF2 model and materials located within props_teaser, but resized.

* This map is dedicated to the memory of neodos.

* New Gate Tank from Diva Dan, gate tank now shows capture on the hud and also triggers gatebot stun on capture
* New jumppad particles; Jumppads now have a boost particle effect
* Cleaned up the portal particles below the saucer; cleaned up cow particles
* Replaced rare cow type easter egg particle, it’s now the 2fort frog.
* Added a third jumppad outside
* Cleaned up map and gate logic for edge cases where the main gate, side gate, and bot nav performed in unexpected ways
* Cleaned up clipping
* Added func_respawnroomvisualizer decals to the front, and to the red spawn for specators
* Moved main robot spawn closer
* Reduced fog for the skybox
* Cleaned up lighting on the props on the roof
* Enabled radial fog on env_fog_controller and sky_camera entities
* Changed Render Mode to Color on func_respawnroomvisualizer entities
* It is no longer possible to achieve victory in a wave after a tank has deployed the bomb
* Updated nav, including fixed bomb drop locations
* Removed some sounds

RC3


- Reduced prop count from 1560 to 1140.
- Mannhattan-specific voicelines now play when the gates are captured or are being captured.
- Removed some invasion content. All that remains is the saucer, a ring, and the jump pads.
- Updated missions.
- Updates to HUD files.