Tweak to resistances from eating

Note: unlike in vanilla, Fire, Cold, Electricity, and Sleep resistances gained from eating corpses will time out.

1) Added the ability to check your current expireable resistances via Cntrl-X
	1a) changed the "Electricity resistance gained" message to "You feel well grounded" to make it more natural to report.

2) Resistances gained by eating Unique corpses > level 15 do not time out. ie, resistances you gain from eating your quest nemisis corpse will not time out.
	2a) Cyclops now grants electricity resistance when eaten (helped make Zeus's thunderbolts).
	2b) Scorpius now grants cold resistance when eaten (lives in the starry heavens).