P0-B6: Part 1310: Debugging, Improvements

I have fixed a few more issues with the navigation system, and made some improvements.

The next step, other than more testing, is to improve the guis and make them more user friendly. I need to add more information to them to inform the user of what is going on in the world, and add more interaction options.

I need to display, for example, the detection radius of enemy ships, etc, so that players can plot paths around them.

I can then test and improve the space combat system more.