DB/Brewfest: Fix "Ram Master Ray" gossip
Scripts/Icecrown Citadel

* Fixed Deathbringer Saurfang faction
* Fixed Coldflame faction
Core/Misc: Refactor scripts to fix static analysis warnings

Eighth batch of fixes targeting 80 issues reported by Coverity
Scripts/Misc: Make InstanceScript::Initialize() obsolete

Move all InstanceScript initialization code from Initialize() to the constructor.
InstanceScript::Initialize() is now obsolete, please don't use it anymore. The only reason it's still in the sources is for backward compatibility.
DB/Quest: Tirion's Gambit

Script for chosen zealots is not perfect as this should surround player/tirion in a circle but cant think of anyway other than every chosen zealot having its own wp and sai.

Closes #10474
Scripts/UtigardePinnacle: Prevent Ymiron from triggering a phase transition at death

...caused by the health percent multiplers used to check transitions
DB/Creature: Delete incorrectly spawned Felhunter