Fixed VBSP not being able to "render" LightmappedGeneric_4WayBlend Hammer tweaks & fixes * Prevent spam about missing $spriteFrame * Fixed sprites with the same material only ever rendering with one render mode, even if different sprite entities use different render modes with the same material * Make env_sprite placeholder box different color from env_sprite_clientside * Sprite helpers inherit entity color, so env_sprite's show correct color Fixed Hammer carve wiping all overlay faces, even if they are not carved * Also fixed undo breaking info_decal preview (NOT OVERLAYS!!!)