Scenario Escape updates

[Xansta]

• Switch to using EE's max health system instead of the max health system I wrote before EE's max health system was implemented.
• Save some sensor data from one ship to the next in the last phase of the scenario so that all the previously scanned ships are still scanned.
• Switch to using the place station utility.
• Divide configuration settings between enemy ship strength and more general circumstantial difficulty (Murphy).
• Add science database entries for stations, the ships Cruiser and Repulse.
• Simplify update loop by removing substitution logic for the independent transport, Kraylor transport, and ship health plots.
• End mission with clear message on the main screen when first player ship is destroyed.
• Refactor randomized junkyard ship positions into a more readable form.
• Adjust asteroid placement function to also support visual asteroids.
• Add station report to station communications information.
• Add prompt and response diversity to missile restocking.
• Fix station knowledge of nearby stations and the goods they might have.
• Add another hint to the players on the engineering console while they are in their first ship.
• Simplify the list of messages sent out by the junkyard dog.
• End the scenario with a clear message on the main screen in case of a victory.