DB/Triggers: Implemented arenas triggers teleport to stop people that go outside the walls.
Scripts/Ulduar: Fixed crashes with Kologarn using Stone Grip
Core/Movement: Use spline id generator for movement packets
Core/Gossip: New AddMenuItem method for using DB texts

Many thanks to @Erimioa
DB/Triggers: Added some missing trigger teleportation in the Ebon Hold.
Merge https://github.com/TrinityCore/TrinityCore