add videos for tests to .gitignore file
implement controller tests, #new and #create, for quizzes
implement add quizz interface
modifications to layout frontpage
implement quiz data on chapter show page
implement quiz show page
implement tests for updating a quiz
implement deleting a quiz
implement show question
implement edit questions
implement delete question
implement new answer
implement create answer
implement edit answer
implement delete answer
add shared/_error_messages to new and view templates
Merge pull request #12 from acandael/admin_quiz

Admin quiz