Core/SmartScripts: Fixed SAI targets 10 & 14 (SMART_TARGET_CREATURE_GUID, SMART_TARGET_GAMEOBJECT_GUID)

Note: If you used these targets to perform actions across maps, it will not work anymore, this functionality is deprecated as it was not safe.
Core/Scripts: Drop `gameobject_scripts` table - empty, deprecated and no longer needed
DB/Misc: fix some startup errors
typofix IN not =
DB/Quest: fix some quest linking for Winter Veil
DB/Spell: add aura allowing player to see miscaller soo-gan for a quest

Closes #7868
Various issuetracker fixes

Immunities for Shambling Horror by Valcorb Closes #7541
Flying and  a path for Higherch by Malcrom Closes #7436
SAI for Talonshrike by Nevadas Closes #8639
Merge branch 'master' of github.com:TrinityCore/TrinityCore into mmaps