[MERGED PR] rebalance genetics cold/fire/thermal res

[Drunkangel]

I think it would be nice honestly. I personally avoid getting the auras because the visual glow is really distracting. It does also mean space suits aren't quite as useful and genetics can achieve many very powerful things so I don't think they'll find it hugely debilitating that they can't make the entire station waltz outside at will. Plus the resistance is still very useful for space walking. Just not permanent.