fixed missing textures, further build area changes

Increased height of the build area connected to spawn, added some visual cues for the teleporters from spawn

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partially rolled back lighting changes... (until I have the time to fix lighting origins)

lighting changes

minor fixes, build-time optimizations

last update had the wrong version of the bsp

Added around 2500 ai nodes (for a total of 3300), fixed some minor issues in the spawn area

fixed allow physgun flags, packed resources into bsp

Initial addon creation.