[Freeciv-Dev] (PR#14668) Cleanup of the flags spec files

["Daniel Markstedt" <himasaram@xxxxxxxx>]

<URL: http://bugs.freeciv.org/Ticket/Display.html?id=14668 >

I'd like to make these changes to data/misc/flags.spec and shields.spec:

• The artists section of flags.spec should just point to flags/credist, 
just like shields.spec currently does.

• Uncomment constantine (Byzantine alternate) and stpatrick (Irish 
alternate) flags. Good for custom rulesets or modpacks.

Also I'm wondering about the 'alien' entry at the bottom? No such 
sprite actually exist...

Finally, is the 'observer' flag needed now when observers isn't players 
anymore?

-Daniel