Knossos

Fixed a few small bugs and a crash if Knossos was run for the first time.


[PPA](https://launchpad.net/~ngld/+archive/ubuntu/knossos) | [AUR](https://aur.archlinux.org/packages/fs2-knossos/) | [PyPI](https://pypi.python.org/pypi/knossos)

This release serves mostly to test the new UI.

Mod installation works, too, but the currently available mods won't
launch properly because their metadata hasn't been updated, yet.