* rewrote SetupSrcipt
* implemented 'zone' parameter
* implemented 'bossdrop' parameter
* implemented 'dungeondifficulty' parameter
* implemented item filter relying on zone information (dropsInX)
* fixed world random drops showing a single loot source
* extended Source column of spells to the same functionality as items
ToDo:
* apply new 'commondrop' parameter on loot listviews
* gather difficuly versions of gameobjects and apply the same logic as for creatures
* implement fake spawns so npcs can get linked to a zone
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