fixed: aircraft supply marker

Добавлены самолеты (с вертолетной механикой):
P-47, C-47, BF 109, BF 109 (30 мм), BF 110, FI 156, У-2, ЯК-1, ИЛ-2
Добавлена бронетехника СССР:
M2 Half-Track, M3A1 Half-Track
Переработано исследовательское дерево СССР.

Airplanes (with helicopter mechanics) have been added:
P-47, C-47, BF 109, BF 109 (30mm), BF 110, FI 156, U-2, YAK-1, IL-2
Added USSR armored vehicles:
M2 Half-Track, M3A1 Half-Track
Redesigned research tree USSR.