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)

Didnt have time to read code in detail yet but, does requesting an ego by name fails gracefully (aka no error) if said ego name doesnt exist ?

Yes, if it doesn't exist, it just skips ahead and generates a random ego instead. I pushed this version for you to review. It still has a lot of debugging code in it that I'll remove for the final version and the tactical weights resolver is not finished yet.

Ready for Merge. Left some debugging code in the new tactical resolver in case it needs more adjustment after some playtesting.