Reduce default max_fps to 150
There's no reason to have it at 300 by default
Add a hack for $alphatest 1 displacements not having collisions
$alphatest 1 brushes are considered "windows" and are non solid, but it doesn't make sense for displacements.
Rename CS:GO mountable game to mention the legacy branch
I am not sure we should keep it, might just leave this to mount.cfg
Fixed blendable textures on a brush being inverted in Hammer
i.e. not appearing like they do in-game.