Generate WW2 Ship groups, added B17 to allies. Implemented modifiable doctrine to setup flight generator.

game/utils.py

@@ -0,0 +1,14 @@
+def meter_to_feet(value_in_meter):
+    return int(3.28084 * value_in_meter)
+
+
+def feet_to_meter(value_in_feet):
+    return int(float(value_in_feet)/3.048)
+
+
+def meter_to_nm(value_in_meter):
+    return int(float(value_in_meter)*0.000539957)
+
+
+def nm_to_meter(value_in_nm):
+    return int(float(value_in_nm)*1852)