New scenario: Discarding a live preview of a font keeps the previous font

Change-Id: I4dbd90263be5a35c654b850e6c3632959e8a3915
(bug 49738) Use correct name for wiki content language

Happens when anonymous user cannot change language, and the
language of the translation differs from the content language.

Change-Id: Ie4f15f1813eec992cfe060baf9cd7dcb5f8a0d95
Merge changes Ie4f15f18,I4dbd9026

* changes:
  (bug 49738) Use correct name for wiki content language
  New scenario: Discarding a live preview of a font keeps the previous font