rhbz994754 Disable inadequately translated UI languages

Some language options were not translated, so appeared as English strings. Disabled.
Remove auto-generated messages files.
Merge pull request #148 from zanata/translation-display

rhbz994754 Disable inadequately translated UI languages
Merge commit 'fb096bb75308b328920485f1d3120192c34eac17' into HEAD
Merge commit '7deb39ff90632d16c80e1dd31876b988917ae193' into HEAD