[Core][RS] Fix Halion's Flame Ring exploit
[Core][RS] Hack fix the issue with Twilight Halion regenerating health during phase transition
[Core][Ulduar] Fix Algalon respawning issue
[Core][UP] Reset Skadi's hp on phase transition
[Core][BT] Don't allow the Shade of Akama event to be started a second time if it's already done
[Core][BWL] Fix Nefarian despawning before his intro ends
[Core][BWL] Nefarian spawn hack fix