Introducing the Higgins boat, bailey and pontoon bridges, and several new model rebuilds for WWII Online!

This patch includes several fixes related to our recently introduced new vehicles and helps improve some quality-of-life stuff.

Several new vehicles rebuilt for WWII Online 1.0 and 2.0, like the: Opel, Bedford, Laffly, Flak30, Flak38 and 2 Pounder!