Purchase Fleet Ships After Construction

[Mr. Mortius]

I have a very useful harvesting design built, but it was constructed as a fleet ship. To build a private one would take another few weeks. An option to buy a fleet ship and change it to a private one would be useful. This option should be disabled when enemy avatars or forces are onboard a ship to prevent buying right before a ship is captured.

[Phenoix12]

Some system to allow empires to put ships up for public sale or even gift them to private individuals would be nice.
Of course also allowing private individuals to sell ships between eachother or even to an empire selling ships to another empire.