Update 8.1.9

ADD: Display of the unit ID of the randomly selected tank portrait in the main menu
ADD: Artillery guns now have a base penalty to hit when firing over open sights, i.e. everything other than artilery support attacks (thanks for the suggestions, KunaMroku!)
CNG: If Hold objective time limit expires and player is in the zone but hasn't captured it yet, the objective won't be failed and player has a chance to capture the zone
CNG: Rocket attacks from airplane units no longer need to score a direct hit to have a chance of destroying an armoured target
FIX: Missing data in the unit definition for Semovente da 47/32, which was causing a crash when switching to this model
FIX: Final to-effect modifiers (eg. Hamada Effect) were being displayed in the AP roll