Maintenance
Added ...

Added "fromStToKg", "fromStToGr", "fromStToLb", "fromStToOz",
"fromKgToGr", "fromKgToSt", "fromKgToLb", "fromKgToOz", "fromGrToKg",
"fromGrToSt", "fromGrToLb", "fromGrToOz", "fromLbToKg", "fromLbToGr",
"fromLbToSt", "fromLbToOz", "fromOzToKg", "fromOzToGr", "fromOzToSt" and
"fromOzToLb"