[FIX] Dead penalty.
When dead, the player lose 45% of his XP and have a chance on 2 every minute to come back to life.
[FIX] When dead don't update vaultboy
[FIX] Using MINUTE and HOUR instead of SECONDS and MINUTE
[OPTI] No need of 64bit variable
Merge pull request #2 from Belphemur/master

Adding death penalty