Fungaloid expansion/rebalance.

Now that our games can handle huge amounts of numbers I'd figure I'd take a look at making fungaloids live up to their name as hordes of monsters. This PR:
1) Greatly increases fungaloid spore spreading rate
2) Greatly lowers fungaloid combat potential
3) Stops fungaloids from going "dormant" which was kinda silly. The monster is currently still left in for save compatibility, but should be removed once monster JSON's are complete
4) Makes spores wander around for *much* longer before becoming young fungaloids, this means you can still fight fungaloids by destroying the spores as you kill them
5) Make young fungaloids grow into adults after a short period of time
6) Made adult fungaloids drop corpses along with spreading spores on death
7) Changed being covered in spores to have multiple levels giving 15, 30, and 45% speed reductions (as opposed to the old 40%)
8) Increased chance of fungal infection from 1 in 30 to [disease level] in 20 (3.3% to 5/10/15%)