city list additions

[That nerdy kid]

Many civs are missing some important cities from their city lists. For one example, the German Empire. The cities of Konigsberg, Danzig (Gdansk), and Strassburg were all important provincial capitals during the German Empire, which is represented by Germany in CIV. While I don't think Strassburg should be a German and a French city in game, I do think that each civ should include the major cities that it controlled at its height. Please feel free to add other cities to civs that you think lack important cities.

Germany:
Konigsberg
Danzig (Gdansk)
(Strassburg)