Update 1.2.57

ADD: Mods can now provide custom xp files for decoration ribbons for any nation included in the mod's custom nation_defs.json file; must be located in a 'ribbons' folder within the mod folder (this functionality existed before but was neither well implemented nor well documented) ADD: Missing base AP score for 107mm gun

CNG: Slight remapping of controller inputs in ammo loading menu CNG: Slight remapping of controller inputs in crew tab in Campaign Day layer

FIX: Crash when displaying Polish rank names with non-ascii characters (thanks Nataniel!) FIX: HE hits now properly use a critical effect chance rather than a critical hit chance, and apply the firepower bonus properly if a critical effect is achieved FIX: Emplacements now properly have a halved HD save when attacked in overrun, also slightly lowered base HD save FIX: Movement preview line on Campaign Day map now drawn much darker if ground conditions are snowy, for better visibility FIX: Added a check when spawning enemy units for Convoy Attack missions to ensure that at least two enemy trucks are spawned FIX: Controller inputs for Supply menu tab in Campaign Day layer