* add missing locales
* use t.Setenv instead of os.Setenv for tests
* locale: present y/n if localisation is not latin. Always accept y/n in every case
* question: use operation info for question
* edge case where localised n is equal to default y
* add tests for basic locales
* Fix ContinueTask user prompt for locales with uppercase yes
The yes/y strings have to be converted to lowercase to enable matching of
the user input converted to lowercase. Otherwise, locales with uppercase
yes/y strings (e.g., German: `Ja/J`) will never match.
* Addess linter issue
* Remove obsolete lowercase conversion
