Core.main: finally force wx to use the locale according to the current NVDA language. This now means that if you change your NVDA language, wx control names such as OK and cancel should now show in your chosen language. It does seem though that wx only has support for languages, not language_country languages (for instance it can't tell the difference between pt_br and pt_pt). Also there doesn't seem to be support for zh (Chinese). But languages such as fr, es, pt, de all seem to work).