Raid Cooldown Tracker

Harden reincarnation cooldown detection against false positives:

• Only credit a reincarnation when the shaman is nearby. Previously it would count a reincarnation if a shaman goes from dead to alive without releasing or receiving a rez. This was causing false positives when the user is a ghost and the shaman received a rez in the raid. Now it only counts if they are also nearby otherwise it won't be in the combat log.
• Let a genuine recast override a false positive and reset the cooldown.