DB/Quest: News from the East

By @Pitcrawler

Closes #13288
Core/SAI: Fix text over errors
Core/LFG: Fix Leader flag being ignored

Fix bug added in 5ca00bc14d38c5ad49f0ab4500af52e645133826 that removed Leader flag of LFG without ever adding it back, giving leadership to players who didn't want it.
Core/SAI: Ingore text valid errors for SMART_TARGET_CREATURE_DISTANCE / SMART_TARGET_CREATURE_RANGE / SMART_TARGET_CLOSEST_CREATURE
DB/Creature: Hira Snowdawn - missing fly around every 10 min

By Killyana, closes #13266
DB/Misc: Remove few startup errors
DB/Conditions: Use Camera (Cultivating an Image)

Camera is meant to work on other dead iron dwarfs not just Iron Rune-Smith

Runic Lightning Gunner and Iron Rune Overseer already have sai to give credit/despawn on spellhit but spell was conditioned to only hit Iron Rune-Smith
Fix typo which was causing error about duplicate entry
Core/Logging: Replaced direct calls to GetCounter() in logs with ToString()
Core/Entities: Removed the possibility to teleport non-player objects to different maps
Core/SmartScripts: Fix multiple target_types

Checking the worldobjects GUID against the iterators GUID instead of pointer to worldobject against pointer to iterator, as 2 different pointers may point to the same object.
Closes #12670
DB/Spells: Add Naxxramas teleports coords

By dr-j, closes #13255
Merge pull request #13291 from Unholychick/patch-1

Core/SmartScripts: Fix multiple target_types
Scripts/Dalaran: remove unneeded script
DB/Spell: Scrape Corrosive Spit

By Rushor and untaught, closes #12189
Core/Spells: Added new error log for spell linked
DB/Creature: Ravandwyr

* Script repeating random trick event
* Script replacement of Archmage Vargoth's Staff

Thanks to @Kittnz for getting data on last missing event.
Build: Fixed game & collision depending on each other for linking
DB/Creature: fixed issue when Valkyrs (Argent Tournament) could kill their guards and players in combat distance.
DB/Gameobject: Add missing gameobject