FIX: emf_lucky.0 wasn't is_triggered_only = yes

Thus it was firing for the AI and managed to slow the game down to
1/10 speed 5 on day 1. Yikes. Curiously, this may mean that character
modifiers with levy law modifiers in them actually cause instantaneous
liege levy recalculation upon application, which could be _really_
handy, as I was under the impression that it was not instantaneous
for character_modifiers.
Lucky rulers: on_death logic error fix, optimization
Lucky rulers: UI/selection improvements
One last lucky rulers tweak