Fixed typo in call to _quiz_question_response_get_instance.
Mark some API functions as deprecated.
Issue #2478917 by djmolny: Unused variable
Removed redundant quiz_question_delete_result().
Removed deprecated action code.
Remove redundant quiz_delete_results() and _quiz_delete_results().
Removed never-called _quiz_user_results_access().
Issue #2464087 by mikemiles86, djdevin: Updating AJAX quiz to utilize ajax framework and changing the use of args()
Issue #2497477 by captainack: Decouple forms from page callback via removal of arg(...) from quiz.admin.inc
Added test for question numbering.
Fixed cannot delete long answer questions.
Issue #2487508 by djdevin: Question numbering
Issue #2482983 by strategicweb, djdevin: How to create a quiz max score greater than 99
Issue #2390573 by djdevin: Updating a question does not update the quiz to use the latest revision of the question
Issue #2485093 by djdevin: Clarify/correct "Leave Blank" button and "Allow Skipping" functionality
Removed unnecessary db_delete because we have an entity_delete_multiple above.
Issue #2484743 by uladzimir.karol: Replace 'und' with the constant LANGUAGE_NONE for multi language site in quiz
Issue #2473357 by djdevin: Leaving TF question blank registers as "false" on reports page
Issue #2470253 by djdevin: saving a quiz with attempts creates revisions even if auto-revisioning is not set
Issue #2470223 by djdevin: quiz not yet open displays "quiz is closed"
Always try to get scores from event
Issue #2461091 by djdevin: Scale update hook has some issues
Issue #2444863 by Jamesap: Quiz 4beta3 update dependencies
Remove console log
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