- test for MySQL locale on locale we have complete enough coverage
- add test for getting non existing locale
Signed-off-by: Michal Čihař <michal@cihar.com>
The LanguageManager is responsible for choosing correct language and
Language class wraps invididual locales, allows matching and their
activation.
Issue #11847
Signed-off-by: Michal Čihař <michal@cihar.com>