DB/Creature: Fix Innkeeper Belm

By Rushor, closes #12618
Merge branch 'master' of https://github.com/TrinityCore/TrinityCore into ghbb
Create 2014_07_24_07_world_conditions.sql

Db/Conditions: Update conditions for Gart Mistrunner gossip
closes #12496
Revert "Core/Spells: Death and Decay"

This reverts commit 02d56e00bc256f224b7d05f90af2c0af7cb287bf.
Scripts/AreaTriggers: Fix an issue with an AT for the quest The Etymidian (Sholazar Waygate)

Closes #12178

Signed-off-by: DDuarte <dnpd.dd@gmail.com>
Scripts/Darkshore: Fix an issue with the quest Gyromast's Revenge

TODO: Rewrite the script in SAI

Closes #11987

Signed-off-by: DDuarte <dnpd.dd@gmail.com>
Create 2014_07_24_09_world_sai.sql

DB/SAI: Argus Shadow Mage SAI fix
closes #12001
Create 2014_07_24_10_world_sai.sql

DB/SAI: Fallen Ranger SAI fix
closes #12206
DB/Gameobject: Spawn some missing mailboxes

Spawn Missing Mailboxes in Undercity and Stormwind

* 6 In Undercity (previously only 1 mailbox was spawned in whole of undercity) - 7 in total including the 1 already spawned
* 2 In Stormwind (12 where spawned) - 14 in total including the 12 already spawned
Rename  	2014_07_24_00_world_misc.sql to 2014_07_24_00_world_misc.sql
DB/Creature: Mana surge

By untaught, closes #11661
Core/NetworkIO: Fixed boost::asio::async_write usage - packets will now be sent properly
Scripts&DB/Feralas Convert npc_screecher_spirit to SAI

SAI by @Rushor and gossip by @malcrom

Closes #12630
Core/Misc: Fixed a possible crash in ProducerConsumerQueue::Cancel
Merge branch 'master' of https://github.com/TrinityCore/TrinityCore into ghbb