Fix BL-756: "multilingual settings" instead of "one language"

The problem was when both Lang1 and Lang2 were the same (e.g. English)
the code would say that lang2 was unselected by default, thus also
deselecting lang1.
BL-697: Improve handling of JavaScript errors
Merge pull request #147 from BloomBooks/BL-768

Fix BL-756: "multilingual settings" instead of "one language"
Merge pull request #143 from phillip-hopper/BL-697

BL-697: Improve handling of JavaScript errors