Issue #2954: prevent logging error messages for not existing translation files
Issue #2954: prevent logging error messages for not existing translation files

Every not existing translation file for the existing locales logged an error message:
Cannot load translation for 'ps': [Errno 2] No such file or directory: '/usr/share/locale/ps/LC_MESSAGES/foo.mo'

mivade/tornado,tornadoweb/tornado,tornadoweb/tornado,tornadoweb/tornado,lilydjwg/tornado,lilydjwg/tornado,mivade/tornado,mivade/tornado,mivade/tornado,lilydjwg/tornado,lilydjwg/tornado,tornadoweb/tornado,mivade/tornado