Update (vers. 690) of Simulator

Main new features:

• Greatly improved converting topographic-maps in hex-maps
  (see this video "Hexing Britain and Ireland in 20 minute")
• You can now "train" the simulator when converting topographic-maps into hex-maps
• Much faster scrolling when editing the strategic map due to new preview-map
  
• Included the scenario "Britain and Ireland 800AD" in the simulator