Fixed City shortcut nav and Bridge nav flow.

Fixed skybox on Forest

Fixed Bridge

New level music, Rooftops now playable in scavenge, and several issues with chapters have been fixed:

Fixed crescendo event in City
Fixed infected getting stuck at the gates in City and Forest
Fixed edges in Bridge

Fixed Forest saferoom.

BIG UPDATE!

Forest and Climb have been extended massively.

And no, I didn't just make Climb taller.

Fixed forest bugs

Fixed rescue vehicle

The floating weapons bug is FINALLY fixed!

Fixed finale