Add goblin mount vendor
Core/GameObject: Format comments and apply rename of previous commit.
Core/Spells: Define and implement SPELL_ATTR7_NO_PUSHBACK_ON_DAMAGE
Core/GameObject: Store unit in GameObject::SetLootState - required for trap activation.
Core/GameObject: Add missing initialization of m_lootStateUnit
Core/Misc: Fix enchants broken in 3aca9e64b34baee781f402c3f33ad7ee7991c232

Compare cast item entry instead of checking cast item spells to fix the exploit mentioned in 3aca9e64b34baee781f402c3f33ad7ee7991c232 without breaking any functionality.
Core/GameObject: Finish moving activation code of traps to GO_ACTIVATED

Fixing #6388 should be easier now...
Core/GameObject: Fix crash added in c6bf7e0b1d615a22c2145c6f4a757a10a9eca92c

Thanks @jackpoz
Remove unnecessary check in previous fix
Fixed SendAddonMessage issue.

This fixes GM's not being able to send/receive addon messages through the whisper channel while accepting whispers are turned off.
DB/Creature: Fix incorrect flags_extra for 30413

By untaught, closes #12010
Core/Spells: Replace MovePosition by MovePositionToFirstCollision in spell dest target handling.

- Solves issues such as being able to summon creatures inside terrain/gameobjects, being able to fall through terrain by using Shadowstep/Feral Charge (Cat), and much more
DB/Gossip: Remove "Jarin Dawnglow <Innkeeper>" double gossip
Closes #12019
Merge branch 'master' of github.com:TrinityCore/TrinityCore into 4.3.4
Core/Players: Fix haste rating formulas. They're supposed to be the addition, not the multiplication of all available bonuses

- This change matches client formulas
DB/Quest: The Bones of Nozronn

By phoenixfight, closes #11985
DB/Instance: Fix Ahn''Kahet exit (portal/areatrigger)
SQL: Rename in correct name
DB/Instance: Fix Ahn''Kahet exit (portal/areatrigger)
SQL: Rename in correct name