Mission Editor Option - statute miles and mph

[DD_Fenrir]

For us WW2 buffs who try to recreate historical missions from an Allies perspective, it would be a nice quality of life addition to provide an option to have the dimensional and speed data presentable in statute miles and mph as well as the Knot/nm and metric options in place.

Thanks for the consideration.

[NSAdonis85]

My addition to this would be to make it period and type specific too across the board instead of only forcing one all over.