Enhance Older Models

[FelixSchulthess]

Many of the older models are not yet ready to be included to Orxonox. The reasons are, that they either have no textures at all or that they look to fancy and colorful and fit into no scheme. We need models, that look nice and similar as if they would belong to the same faction. This way, we are able to create whole fleets of ships, something that will probably seem much more realistic in space.

There is no need to create all models from scratch, as long as there are still models from older versions of Orxonox, that could possibly imported and adapted. This means, modifying/enhancing an existing model and creating a new cool texture for it or adapting the old one.