Small patch to fix a crash and other small bugs.

Compatibility patch for Hearts of Iron IV version 1.14.6

0.3.7.4 Two Steps Forward -> 0.3.7.5 Two Steps Forward:

Bug fixes and Changes:

Full Trial of Allegiance Compatibility
Fixed Kazan Unification crashing the game
Improved compatibility for users without BBA and NSB
Fixed Hejaz not having an air base despite having an air force
Fixed an issue where air squadrons were being deployed to incorrect states
Britain, France, Russian Empire, and Mantetsu no longer have chassis without turrets in their armoured divisions
Added an air force to Austria at game start
Added unique names for certain countries’ planes and tanks
Changes to equipment localisation
Fixed Polish tank icons
Fixed Asian generic general portraits being displayed in places they shouldn’t
Migrated new technologies and modifiers
Fixes to strategic regions
Fixed wrong ideology triggers for California
Removed localisation duplicates for air ace events
Various other bugs and fixes