Adjust quizz/new smooth with controller params.
Fix! value of quiz[type] and quiz[category]
fix typo
Merge pull request #90 from yuchan/fix-some-typo

fix typo
Merge pull request #91 from not001praween001/adjust-quizz_new-with-controller-params

Adjust quizz new with controller params
Do not allow user edit question and answer to blank.
Merge pull request #92 from not001praween001/adjust-quizz_new-with-controller-params

Do not allow user edit question and answer to blank.