double battle prestige multiplier since owner prestige was removed
disallow de-jure drift for the papacy
give nickname "the great" if having more than 10.000 prestige instead of 1.000
battle unit owner now *actually* gets no prestige + main-leaders/sub-leaders fixed to default 50%/50%
set decadence back to vanilla
only get crusader trait from combat pulse, not by simply arriving
importing changes from CKII 2.2.0.5