Merge branch 'master' of github.com:TrinityCore/TrinityCore into 4.3.4
Core/Spells: Screams of the Dead's (51750) duration shouldn't be affected by diminishing returns
DB/Creature: Revert faction of Fizzle Darkstorm to 3.3.5a

He is dead on 4.x and higher. Closes #13015
Core/Guild: Only send achievement criteria updates to players that requested them

Implements CMSG_GUILD_SET_ACHIEVEMENT_TRACKING
Core/Net: Fix structure of SMSG_GUILD_ACHIEVEMENT_DATA when there are no achievements to send
Core/Net: Enable SMSG_REQUEST_CEMETERY_LIST_RESPONSE since it was already fixed previously
Core/Net: Correct structure of SMSG_LF_GUILD_POST_UPDATED
Core/Net: Correct structure of SMSG_GUILD_CRITERIA_DATA when empty
Core/Handlers: Fix two warnings recently introduced
Merge branch '4.3.4' of github.com:TrinityCore/TrinityCore into 4.3.4
Core/Handlers: Fix a typo in previous commit
Merge branch '4.3.4' of github.com:TrinityCore/TrinityCore into 4.3.4
Merge branch 'master' of github.com:TrinityCore/TrinityCore into 4.3.4
Core/AuctionHouse: Fix issues reported by Coverity
Core/Net: Fix and enable CMSG_LFG_SET_COMMENT
Core/Net: Implement sending guild challenges rewards and counts

CMSG_GUILD_REQUEST_CHALLENGE_UPDATE & SMSG_GUILD_CHALLENGE_UPDATED
Partial implementation, guild challenges are not being tracked yet
Merge pull request #13017 from DDuarte/guild_achiev_tracking

Core/Guild: Only send achievement criteria updates to players that requested them.
Scripts/Black Temple: Update Mother Shahraz to EventMaps
Scripts/SWP: Update M'uru script to EventMaps/BossAI
Merge pull request #13020 from Nyeriah/wip-muru

Scripts/SWP: Update M'uru script to EventMaps/BossAI