Added a game rule, if you would prefer the summoned characters have a random culture you can turn it on.

Fixed the game rule category, will be in the "AI" category now.
Rather than gameplay_game_rule_category_etc insane string of words category.

They're related, but didn't share a dynasty? - fixed

Added game rule for new games and a decision for games already in progress - to disable AI from using the mod if desired.