A little buff to Soviet AI

A quick fix for removing soviet dynamic modifiers after the war.

The whole mod reworked

-> German decisions, national spirits changed
-> Soviet decisions, national spirits changed

-> Fixed a bug: Siege of Leningrad, Battle of Moscow, and Battle of Stalingrad event did not show up.

-> All the national spirits has been re-balanced
-> Soviets' winter buff is removed.
-> Now, the national spirits have an identifier string that identifies that these national spirits are added by this mod.
-> AI gets additional national spirits to balance its state against players.
-> Now, Soviets have division spawn decisions.
-> The city requirements of the decisions is increased.

Compatibility update for new patch

- Fixed news event not showing up

- Fixed localisation file
- Changed national spirit availability, not important

- Conditions for activation of mod have been changed.
--> Condition: Requirements of Leaders (Hitler and Stalin) have been removed.
--> Condition: Non-Aggression Pact have been added