quiz 7.x-5.0-rc3

This is likely the last release candidate for Quiz 5.0.

All release blockers have been fixed.

Make sure to run update.php after updating to this release.

Notable changes:
by captainack, djdevin: #2487756: Quiz creators cannot view results for own quizzes
by michaelk, djdevin: #1659400: Hitting "Enter" goes to previous question
by djdevin: #2374317: Contributed module can not know when quiz.max_score is changed
by djdevin: #2281825: quiz_start_check and quiz_availability are near duplicates
- Convert quiz summary block into a themed table.
by valthebald: #2694237: Add default panels pane configuration
by djdevin, Da_Cloud: #2281823: Convert unevaluated reports to a view
by djdevin: #2588607: Rules dependency?
by djdevin, tenken: #2626130: parameter confusion between question types
#2761669: Hide question type while taking quiz
by djdevin: #2779623: Decouple body field
by djdevin: #2691789: Feedback Block Appears Before Question Title
by Da_Cloud, djdevin: #2692909: Icons on multiple choice node not working
by djdevin, donaldp: Fatal Error: #2624264: Fatal Error: Class name must be a valid object or a string in ../quiz/question_types/quiz_question/quiz_question.module on line 646
by make77: #2648254: Categorized list of questions is not filtered by language
by valthebald: #2707115: Reset entity cache after questions are updated
by RayCascella, djdevin: #2762449: Quiz Question headers show on 'after the quiz' review page
by djdevin, jweowu: #2750513: Don't use $reset flag with node_load()
by oldspot: #2775449: Naming custom entity 'question' causes php fatal error
by djdevin: #2770163: Add bundles to quiz results
by djdevin: #2770159: Add filtered text support to long answer rubrics and answers.
#2742787: WSOD on Node Add Quiz page (token_tree performance issue)
by djdevin: #2732997: Remove unused theme functions and move to quiz.theme.inc
by bohart: #2742787: WSOD on Node Add Quiz page (token_tree performance issue)

+ dead code cleanup