fixed: rocks now correctly spawn in rocky biome and not forest

fixed: rock spawn from player mined rock (should have also fixed the crash)

fixed: invisible flowers after reloading world
fixed: rocks to boulder crash when set to off

fixed: crash with growth modifier during winter

cleaned code & removed some debug prints

fixed: crashes due to missed prefab counters

fixed: entity tracking

fixed: growth modifiers and prefab exchangers were not working