DB/Misc: More event fixes

* Scripts repeating event between High Overlord Saurfang and Garrosh Hellscream in Warsong Hold
* Scripts repeating event between Chieftain Wintergale, Durm Icehide and Sage Aeire at Taunka'le Village

* A few texts for reward/accepting of quests
* On Agro texts for several creatures, even though these still need scripting with abillities
* A run-time error
* A bit of additional script for Watcher Leesa'oh to prevent npc bugging out (no npc flags) caused by sai not running if no player in grid and if player disappears will cause npc to remain without npc flags, as the sai to restore flags wont run from script if no player there, at start of script, script will set phase 1 with ooc to restore flags in that phase.
DB/Misc: Missing Spawns

Respawn the following creatures as tc had considerably less spawns of them than should have done

* Tua'kea Crab Trap 
* Nerub'ar Victim 
* Giant Tidecrawler
DB/Creature: Remnant of Dahlia Suntouch

Script event which occurs when Dahlia Suntouch is killed.
Core/Misc: Optimized locale loading
DB/Misc: Resubmission

Resubmit https://github.com/TrinityCore/TrinityCore/commit/c212c4fcc3bde1809e58fe1c16d37a29d70ce7bb with different guids
Remove uneeded files.
Core/Socket: Added helpers to retrieve the size of currently ready data
Core/Misc: Fixed loading trinity_string
DB/SAI: New Hearthglen Fixes

Several missing texts for creatures in New Hearthglen

Also scripts Admiral Barean Westwind (Dragonblight version)
Core/Transports: Delayed adding transport model to next tick after teleporting to fix race conditions happening when teleporting transport happens at the same time as destination map balances its dynamic LoS tree
Core/DBLayer: Fixed an incredibly rare memory leak happening when player started loading from database and never finished
Core/Battleground: fixed possible mount abuse after leaving BG
Merge pull request #12847 from ShinDarth/tc_fix_mount_abuse_after_bg

Core/Battleground: fixed possible mount abuse after leaving BG
Core/Players: Already complete quests shouldn't turn failed
Scripts/Quests: Prevent starting Grizlee event if it's already running (solves the issue with many Engineer "Overspark" spawns)
DB/Misc: Misc Fixes

On agro texts and a missing gossip option and menu.
Merge branch 'master' of https://github.com/TrinityCore/TrinityCore
Fix arena points distribution for non-80 Call To Arms BattleGround
- Scripts/Ulduar: Performance warning
- Core/RollSystem: Solves issue with items being void if the player has inventory full on a disenchant roll (will work the same way it currently does with greed/need rolls).