change unification_cb trigger

add unification_cb (AI only, Unify same culture, dynasty, religion)
add localization template
fix trigger error

Fix AI holding build order
- AI didn't construct new holding properly.

Fix lovers pox event
-The problem that was infected no matter what the choice.

Fix PERCENTAGE_INTO_WAR_CHEST 0.75 to 0.5
- Default war budget was too high.


change some modifier value.

fixed some value based on the construction and war mechanism of AI

change some value, I realized the chosen ai does not build the building

rollback

del redundent code
balance levy size to make ai less bankrupt
fix ai get the chosen modifier immediately when inherited