iFace cleanup. REplaced some files for Russia-linked factions.

MErchants, supply wagons, traders........
- Armed caravans hit harder, move faster and and have some armour. Available if you rsearch Corporatism.
- Armed merchants: a bonus for researching Corporatism as Mongolia, AFghanistan, Russia, Tibett or Japan. Problematic for Mongolia since it may be preferable to go down the Socialist path to get Foreign Volunteers instead.
- Armed supply: available to a handful of nations present in the Middle East - including Britain, Poland, Ukraine and France and Russia. Available only if you rsearch Organized Labour, very useful for keeping large armies of infantry on the go.

More changes:

A new archer-based skin given to Armed Merchants trained by Russified nations. Reason: ANEw changes to how Armed Merchants are obtained and trained.

[25.3/10]
- Fixed an issue with Armed Caravans that caused the game to crash (grazie, Reika Ekure!)
- Audio for truck version of Caravan also fixed.
- Unfortunately, no decision yet how Armed support units should be dealt with in this mod,