detected in the photos
2. Check if the tags to applied are non empty and skip otherwise. It
applies to empty entries in the GUI ("unknown person tag" and "no
persons found"), when the user types something and then deletes it
3. Change the string "togs of images to ignore" to "tags of images to
ignore"
When locales use comma for numeric decimal separator, tolerance argument is not passed correctly.
I propose to switch temporally to "C" locales before converting float tolerance to string to get a period decimal separator.