Fixes of the translated code

Places where the C# translation behaved differently from the DOS game.

• A starving city without a settler was always lost; now it loses a citizen.
• Computer research was announced as "... discover X from the Barbarians!".
• Wonders nobody had built or whose city was destroyed crashed the game.
• Civil war: technologies, the war between the two sides, splitting the cities, the capitals and units without a home city were handled wrongly or crashed.
• The military report crashed on a row of a player without contact.
• Computer players misjudged the strength of their own stacks.
• Tenths in the census and spaceship screens were wrong ("4.4" for 4.5).
• Spaceship parts were not drawn; a full part kind now says "No further ... required.".
• Only one city a turn could be hit by a disaster.
• The replay lost the high byte of the population.
• A threatening emissary named the wrong civilization.
• A new game cleared the ruined units of the wrong player.
• Continents and seas past the 63 ranked ones got garbage numbers.
• Demanding a tribute under peace gave 0 or 1 gold instead of the amount.
• A barbarian removed at the map edge got a garbage order.