Add goblin mount vendor
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/Conditions: Fix startup error added on 018da66
Scripts/SWP: Sathrovarr will no longer cause player teleports on grid load
Merge pull request #12058 from Trisjdc/sunwell

Scripts/SWP: Sathrovarr will no longer cause player teleports on grid load
Merge pull request #12021 from Trisjdc/spell_target_dest

Core/Spells: Replace MovePosition by MovePositionToFirstCollision in spell dest target handling.
Tools/MapExtractor: Don't start filenames with a backslash
Core/Misc: Fix crash in ticket creation

Fix a crash happening with malicious CMSG_GMTICKET_CREATE packets.
Core/SAI: Prevent nullifying damage, because of player damage requirements
Fix various warnings. The core, the scripts and the tools now compile without warnings with -Wall -Wextra -pedantic.

-Fix warnings from -Woverflow on implicit constant conversion.
-Fix warnings from -pedantic.
-Fix warnings from -pedantic.
-Fix warnings from -Wformat.

Two minor changes in addition :

-Replace a defined value equal to 2^31 - 1 by std::numeric_limits<int>::max().
-Remove useless null-check on pointer returned by new. New doesn't returns nullptr on failure, it throws std::bad_alloc.
Remove changes in dep file.
Contrib: Added an updated version of the configuration file merger tool.

This one lets you choose which value to keep between the two configuration files.
Make sure to carefully read the file's lines 3 to 9 to make sure you don't misuse it and get back at me later raging.
It is not exactly as I would like it to be, but current state will have to do.

You can try it out live at: http://tinyurl.com/kzxmrlm
Core/Movement: Fixed flying mount speed not persisting after relogging/teleporting
Core/GameObjects: fixed instant reset of gameobjects after activation
Core/Calendar: Use single database transaction for adding multiple invites when creating new event
Core/Calendar: Align max amount of Players to be invited to Client limits

Limit the max amount of Players to be invited to a Calendar event to 100, same limit as the one in the Client
Fixed build without pch
Shared/Database: Increase Database Worker Pool queue size

Increase DatabaseWorkerPool queue size from the default 16KB to 8MB to avoid blocking the caller thread when queuing an async statement/transaction.
Core/Warden: Fix crash

Fix crash with empty CMSG_WARDEN_DATA packets
Shared/Packets: Handle crash by throwing an exception instead

Throw a ByteBufferException when trying to access the first element of an empty ByteBuffer class