War check improvements

Moved as many requirements as possible from the "is war possible?"
decisions over to the war declaration UI. Some still remain due to it
not being possible to display title requirements in the UI yet
Code simplification
Blue Zoroastrians

Changed the colors of Zoroastrians to blue as it looks better than red,
and is at least somewhat relevant
Decision consistency

Merged Show/Hide Loan Decisions into a single "Toggle Loan Decisions"
decision
Gender law changes

Changing gender law now requires a certain level of prestige (500 for
Agnatic and Agnatic-Cognatic, 1000 for True Cognatic). The prestige is
not lost
Added Enatic-Cognatic and Enatic succession with some very high
restrictions. The AI will never use either
It is no longer possible to move directly from Agnatic to True Cognatic;
succession law has to be changed in steps: Agnatic -> Agnatic-Cognatic
-> True Cognatic -> Enatic-Cognatic -> Enatic
Applied succession changes to PB+SWMH
Culture building rebalance
Culture building reference
Culture buildings fix

Fixed only Greeks in the Byzantine culture group having a culture
building
Holy war tweaks

Reformed pagans don't get the holy war CB for free due to the presence
of their religion in unreformed realms of the same religion
The bypass of holy war requirements due to same religion provinces in
the target no longer bypasses the holy war cooldown
Stricter county conquest

Fixed the Muslim County Conquest not having as strict requirements as it
were supposed to have
Succession law fixes

Going from Enatic to Enatic-Cognatic probably shouldn't require being
female
Byzantine kingdom creation prevented

The kingdoms in Byzantium can no longer be created by vassals of the
empire
Duel tweaks

Made brave, proud, and craven affect the chance of running away from
combat much more
People with a combat trait are now biased towards not running from
battle even when meeting equals
Gender equality module improvements

Women will now take appropriate councilor ambitions in the Gender
Equality module
Ensured Enatic(-Cognatic) is easy in Gender Equality
Corrected prestige requirement
HRE creation tweak

The HRE can no longer be formed by Bavaria while East Francia still
exists
Crusade CB fix

Corrected some issues with the Crusade CB
Crown laws fix

Added an event to fix the lack of crown laws when creating a new kingdom
as a duke (vanilla issue)
Fixed crown law fix