Quiz Branch Updated

- Quiz Controller created for Ember
  - for passing score, and allowed, there are now toggles for editing as
    well as cancel and update.
- Quiz Template (templates/quiz.hbs) now has inputs for allowed and
  passing_score. Numbers are no longer allowed and a save is not
  possible unless it is a number. Also not having a number throws an
  error as well
- updated Larvel Quiz Model so timestamps are no longer required
- updated Laravel Quiz Controller so that updates are properly saved
Editing questions is now fully functional

- You can now edit the order and have it update dynamically
- You can also edit the text of the question
- you can toggle whether an answer is correct as well as change its
  text

Next up
========
- Creating questions and answers
- deleting questions and answers
FINALLY REMOVED BUG WHERE MENU WOULD NOT GO AWAY
You can now delete questions

[FEATURE] You can now delete questions. Once a question is deleted, the
order of the questions after the deleted question will delete by one.
You can now delete answers

[FEATURE] You can now delete Questions

[FUTURE] You should be warned if your question does not have any correct
answers or has more than one
[FUTURE] You should be warned if number of questions it takes to pass
the quiz is greater than the number of questions
[FUTURE] You should not be allowed to put 0 as the allowed attempts
[FUTURE] There should be a 'clean Question Order' in case the order is
off. For example if the first question is #2, a question is missing the
order, or there is a gap between questions
Added ability to manage quizzes

- You can now add edit and delete questions
- You can also add edit and delete answers
- once the question is created, the user is asked whether he or she
  wants to create answers or autogenerate true/false