Quest 4901 "Guardians of the Altar"
Core/Misc: Do not use singleton when calling to static function ChooseDisplayId (and remove unused parameter)
Core/Account: Remove unused helper functions
Core/Misc: Define multiple functions const (+ code cleanup here and there)
Merge pull request #8734 from blipi/guardians_altar

Quest 4901 "Guardians of the Altar"
SQLS: Rename sql file after PR merge
Core/AI: Do not expose internal storage of SummonList
Core/Scripts: Removed CAST_PLR define
Core/Scripts: Removed CAST_CRE define
Core/Pets: Remove unnecesary member variable (m_owner)
Core: More functions moved to const
Merge commit '4429830ed781897c3346e43e5ad6695cc6e78141'