Add Kenyan Shilling note sizes

[bkmgit]

Would like to make a pull request for this. Maybe one could specify reference sizes and save them as part of the configuration if Kenyan Shilling note sizes are too specific.

[bkmgit]

Option to have additional reference sizes is already implemented. Kenyan Shilling option would be nice, as there seem to be options for Yen and other currencies for which main users of the currency have a translated language, but this would probably be an unwanted change as would a Kiswahili translation. Maybe these are best done in a fork, or one could have additional language pack downloads?