Found some more loc errors, and a few small bug-fixes. Adjusted the on_action which sends the courtier management event to only apply to players and larger courts. Also added some more sanity checking for that event.

Couple of minor bug-fixes. Also added the ability in ANSF for half-siblings after the first to possibly use the parent of a previous half-sibling (and make them twins if they're the same age). It also now properly assigns the house to the half-sibling.

Added a new courtship outcome event, plus a few minor bug-fixes. Mostly in localization.