timesGotQuestionWrong not being updated correctly in state

[YuxinZhangChristina]

timesGotQuestionWrong supposed to log number of times question was gotten wrong, but it is not being logged correctly. Unclear what value is being used for (logging perhaps?)

To replicate:

1. From worldview, go to any exercise
2. submit incorrect answer.
3. Change answer to another incorrect answer and submit again

Expected: state.timesGotQuestionWrong is 2
actual: state.timesGotQuestionWrong is undefined or 1

Changed by updateWrongAnswersCount() in App.js