DB/Creature: Zangen Stonehoof

Script daily event with Zangen Stonehoof
DB/SAI: Re-add a line of sai 

Re-add a line of sai which I accidentally deleted in https://github.com/TrinityCore/TrinityCore/commit/1c345e59bcfc0606b7cf785b51eb524350e54072 and because of it broke the Kessel Run
DB/Creature: Fix Angus Stern spawn point

Closes #12661
DB/Misc: Fix up Kil'Sorrow Area in Nagrand. Added spawns, pathing, visual spells, and fixed SAI.
Db/Pathing: Pathed second set of Murkblood Invaders in Nagrand
Core/Networking: Attempt to fix some exceptions

Call the non-throwing versions of socket.remote_endpoint in GetRemoteIpAddress
and GetRemotePort. Sh*t will still be broken tho
DB/Quest: Saving Princess Stillpine

Original work by @Malcrom, modified and made to work by me.

Closes #4518

Known issues Scorching Totem used by Bristlelimb Shaman does not work it summons totem but totem does nothing
High Chief Bristlelimb maybe missing wp/pathing 

except for the above working as intended
DB/Waypoints: Add waypoints to all Fen Striders in Zangermash and add one missing spawn
DB/Creature: Fix Lesser Scorching Totem

As with other totems this needs spell in spell1 in creature template

Fixes the issue with totems used by Bristlelimb shamans not working as in https://github.com/TrinityCore/TrinityCore/commit/cdadcc62a0cda6ff8a56d02a3a96bc575ef0f761
DB/Misc: Remove some hacks

Remove some hacks and rescript some quests to work properly using server side spells now as we know them

* Slim Pickings
* Master the Storm
Core/Startup: Change an error about "broken zone-data" on guild loading to debug

This "error" happens when player is on zone 0 or transport.
Core/Network: Fixed packets being properly received only by the first player when broadcasted to everyone

Closes #12675
DB/SAI: Alpha Worg

Original Script by @Malcrom, updated by me

Garwal should be invisible to players without aura from http://www.wowhead.com/spell=43060 this is also the spell which forces reputation on garwal to be hostile but the server side spell which Garwal is meant to cast 43062 Alpha Worg: Garwal's Invisibility which is in spell dbc now but does not work so players can still see him without quest but hes friendly.

Closes #8412
DB/Misc: Add some pathing, equipment, and missing Combat AI for several npc's in Nagrand
Rename 2014_07_28_07_world_misc.sql to 2014_07_28_08_world_misc.sql
DB/Waypoints: Fix pathing for creatures in cave between Zangermarsh and Blades Edge
DB/Waypoints: Replace estimated path for Stronglimb Deeproot with proper data
DB/Misc: Fixup Twilight Ridge area of Nagrand. Add missing spawns and waypoints, fix visuals, and fix SAI.
Update 2014_07_28_07_world_sai.sql

slight change to reflect recent changes in db structure
Core/Instances: Explicitly unload InstanceSaveMgr before MapManager, fixes invalid memory access at shutdown

Closes #12635