This reverts commit 4a13733e68903904e088fe21d86dec6d927ee7d8.
While I'm still not happy with the desciptions, we probably need
some sensible way to talk about these in chat, wikis, etc.
This always felt kinda redundant and the names
themselves never seemed all that great.
For Lux Burns in particular, I'd rather the radiation
symbol speak for itself.
- Player hp_max is 8 now, so most injuries will block
a whole slot each time.
- Player can be reduced to 1 slot, not 2. The 2 slots
was from back in the day when players needed to go
to the surface to heal faster, to help them get up
there. Now the 1 slot is only needed in case the
player is trapped in fire or something.
- Damage effects now don't stop playing just because
the player has reached maximum injury, and healing
is also delayed by continued injury.
Guarantee 2 usable slots no matter how many different
injury effects accumulate.
Filled slots will be shared among different damage types
roughly proportionally.
