Update LanguageOverlay test


Update LanguageOverlay test

  • Don't assume the element is in the DOM and thus can be visible. Test display value
  • Not sure why this was previously passed but it was a false positive - the item in the language

menu should be Uppercase and will be tested against the lowercase version. This fails in plain mode
but for some reason not with our qunit.

Change-Id: I45aa83a05ee8e754abd0c9b85cd5e1fb5a4901e1