Quest 4901 "Guardians of the Altar"
Core/Vehicles: Corrected an oversight in b3b66a8d028fafef1e71477325f467ef73626c8e

Closes #9399
DB/Quests: Fixes Memories of Stormhoof, closes #1065
Core/RBAC: Fix players not being able to reply GMs from the other faction (Partial revert of 377cfdb)
DB/Quests: Fixes Scare the Guano Out of Them! Closes #6854

Thanks @w1sht0l1v3 for initial work
DB/Auth/Schema: Change secId from int(10)u to tinyint(3)u in rbac_security_level_groups

Closes #9403
Core/Objects: Changed `playercreateinfo_spell` and `playercreateinfo_spell_custom` to use race and class masks.

Specifying a race mask of zero will provide the spell to every race.
Specifying a class mask of zero will provide the spell to every class that the race can be.

Note: As the SQL truncates `playercreateinfo_spell`, all your "custom" additions will be gone.
Fixed build.
*Correctly* fixed the build.

Sigh.
Core/Objects: Added missing data convertion for `playercreateinfo_spell_custom`.
Fixed a duplicate ALTER query, it was already in the previous SQL file.
Rename sql files
Core/Vehicles

* Fixed crash happening when passenger died on vehicle he was controlling
* Fixed crash happening if vehicle control aura was removed before passenger is fully added to vehicle

Closes #7160
DB/Quests: Fix The Best of Intentions, closes #5716

Remove a bunch of incorrectly spawned NPCs and add some missing NPCs and GOs for quest Defiling the Defilers.
Script/Spell: Unlocking Zuluhed's Chains

Closes #996
DB/Loot: Correct Lootmode for some questitems (thx redsonja as well)

Closes #9382
Closes #9381
DB/SAI fix some event_flags and other conversion issues

Closes #9144
Core/Vehicles: Fixed a crash introduced in 2c169bcca51ca1b5cdbc73c9a4d402d46cdcfc15
DB/Spells: Fixed startup errors related to playercreateinfo_spell, and prevent logging spam when race mask or class mask 0 is used.
Scripts/Pit of Saron: Very minor spelling error correction.