Issue #1827880 by Mohammed J. Razem | memberall: Fixed Undefined index: group_by() in quiz_views_handler_filter_quiz_nid()->construct() line 46 .
Issue #1538808 by edboost: Fixed Error when trying to update overall quiz form settings.
Issue #1921538 by Andy Dorman: Fixed Notice: Undefined index: und in theme_quiz_admin_summary(), Working Patch.
Issue #1918024 by sivaji: Fixed Add pager to My results page.
Issue #1935944 by Rajeevkr: Fixed Undefined property: stdClass Notice.
Issue #1933310 by studfier: Fixed Warning: array_merge() [function.array-merge]: Argument #1 & #2 is not an array in quiz_question_config().
Issue #1936666 by RaceCorp: Fixed Error when deleting a multichoice question.
Fixed php notices in take page when no questions added to quiz.
Issue #1899654 by mateomiguel: Fixed Can't view Long Answer questions.
Issue #1876104 by sivaji: Added option to mark a question as doubtful while answering.
