DB/Loot: Correct Lootmode for some questitems (thx redsonja as well)

Closes #9382
Closes #9381
DB/SAI fix some event_flags and other conversion issues

Closes #9144
Core/Vehicles: Fixed a crash introduced in 2c169bcca51ca1b5cdbc73c9a4d402d46cdcfc15
DB/Spells: Fixed startup errors related to playercreateinfo_spell, and prevent logging spam when race mask or class mask 0 is used.