learningequality/ka-lite — pull request #2300 by rtibbles (2014-08-05 01:13:52+00:00)
Title: Checks properly for existence of array element for quiz_log response_log

Current behaviour:

* Quiz Log's response_log field only records [null, null, null...]

Desired behaviour:

* Response_log should have a list of number correct in each attempt at the quiz.

Summary of changes:
* Add an "!" before checking whether an entry in the response_log exists.