WIP: Punish players who don't move from their position during Candor.

When a new round starts, the position of the player is compared with the
position from the last round.
If it's the same, the player is poisoned and damage is dealt based on how
often the player didn't change their position.
Candor Fix:

 * Clean player variables when the player dies / at end of round
 * Do no punish players before round 600
 * Hurt players based on a % of their Max HP, not a fixed value
 * Make the poison duration depend on the severity of the punishment (8s per increment)
Candor fix: Clean dead players' variables with OnPCDieEvent
Candor Fix: More severe with poison duration
Merge remote-tracking branch 'v0id/candor-wip'

Conflicts:
	world/map/npc/029-3/parua.txt