Refactored grass and decor systems to start spawning after calling Refresh()
Made grass and decor patches always snap to main camera, no need to move the game objects via script
Made Refresh() do a full rebuild if called after already being initialized (can be used at respawn)
Made TerrainGenerator.GenerateTerrain() call Refresh() on static and list decor
Made Client.OnClientFirstSpawn() call Refresh() on dynamic decor and grass