Issue #2291279 by djdevin: Use entity save for Quiz results and quiz resul answers.
Fixed issue where the "leave blank" button would skip the next question.
Revert "Issue #2291279 by djdevin: Use entity save for Quiz results and quiz resul answers."

This reverts commit 2f0083a6c153e7b3ec6810dda3c1bb3e9bf421e7.