Issue #2278083 by djdevin: shuffled questions per page
Issue #2278083: tests for randomized questions in quiz pages
Issue #2336503 by djdevin: Selecting just 'quiz feedback' should show only matching result options
Updated query to set random questions back to always when a quiz goes from random -> not random.
Fixed another query when converting Quizzes to categorized random questions.
Merge branch '7.x-5.x' into 7.x-6.x