Randart randboss updates

Fixed several bugs with randart and randboss generation. Randbosses will not be created with duplicate or incompatible classes. The Last Hope merchant should no longer create inappropriate randarts for the player. NPCs with spells should no longer be spawned with inappropriate equipment (no more arcane disruption). Added support for more random Fixed artifacts. Not all antimagic actors are Zigur followers.

generateRandart parameters work correctly, and new parameters have been added. game.state:addRandartProperties(o, data) function added to allow random properties to objects. new resolver to calculate NPC ai_tactic based on talents known. (still in development)