DB/Spell: Fixed EFFECT BIND position for "Teach: Death Gate".

Ref #8590
DB/EAI: Fix db error in 3a5ed66dcd08bbca276b87ee4f2bc94c403bda21
DB/Quest: set correct class requirement for The Forging of Quel Serrar

Closes 4194
Core/Misc: Minor optimizations (+ code changes to reduce differences with 4.3.4 branch)
Core/Misc: Minor optimizations (+code changes to reduce differences with 4.3.4 branch)
Core/Logging: Create new logger type "Cheat". Will be used to log all cheat attempts