Pigeon/Wigeon AWD 2.3

• updated the mod to 0.27 standards
• general file optimization
• Removed the goofy ahh 3WD
• Revised 4WD transfercase
• Revised configs

Changelog v2.1:

• changed Clutchex AWD Transfercase to Viscous Transfercase,
• added Race AWD transfercase.

Changelog:

• Added AWD frame for wigeon and pigeon to make the mod easier to use;
• Revised configs;
• Added 3WD.

Fixed strange front differential behavior.

Changelog v1.1:

• Added "The Pond Skipper AWD (M)" config;
• Revised "Rock Dove AWD (M)" config.