DB/Quest: Fix Bouldercrag the Rockshaper Quests linking

Closes #9578
DB/Trainers: Add Enchant Boots - Lesser Accuracy to appropriate trainers

Closes #9571
DB/Creature: Adding missing spawns of Glinting Dirt
Fix imports
DB/Quests: Fix Pa'Troll and Lab Work, closes #5910 and really closes #2382
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.
Clearify the guild limitation message on world server initation (3.3.5a withdrawal cap; 4.3.4 withdrawal and guild rep cap)
Merge pull request #9612 from Ascathor/master

Clearify the guild limitation message on world server initation
DB/Quests: Fix Ursoc, the Bear God, closes #3165 #9535
DB/SAI: Convert a core script to SAI. Fixes issues when abandoning the quest.

Thanks @dr-j for the initial work.
DB/Quests: Fix Bringing Down Heb'Jin, closes #376
Remove BOM
Merge pull request #9626 from LeGuybrush/master

Remove BOM
Script/Spell: Apply Frost Imbued Blade only in 25 man mode

Note: Quest credit spells are already casted in 25 man mode only.
Script: Remove unnecessary constant
Remove BOM