[MERGED PR] Purgatives and dialysis machine rebalance

[Kotlol]

question: what does medbay do about multiple cases of severe poisoning at once (such as in an artlab accident), should the dialysis machine become the de facto best purgative? I'm not against making the dialysis machine more central but the fact that there's, well, only one of it seems like a could be a complication. whether it's a good kind or a bad kind is something I'm entirely unsure of

Well that's simple. 1 Dialysis machine for accurate/fast puratives.

The rest has to be treated constantly till the machine is free.

So we got 1 on Dialysis, 2 in cryo tubes and maybe 1-2 being treated normally.