Enable categories's feature.
Enable categories's feature(2).
Enable categories's feature(3).
Enable category description on the index page of listing quizzes.
Enable category description on the index page of listing quizzes.
Do not print "no category" record.
Delete tmp file.
Adjust "show.html.erb"
Category checked properly.
Merge pull request #136 from not001praween001/about-category

Enable categories's feature.
Merge pull request #137 from not001praween001/about-category

Enable categories's feature(3).
Merge pull request #138 from not001praween001/about-category-2

Enable category description on the index page of listing quizzes.
Merge pull request #139 from not001praween001/about-category-2

Enable category description on the index page of listing quizzes.
Merge pull request #140 from not001praween001/about-category-2

Do not print "no category" record.
Merge pull request #141 from not001praween001/newquiz-updatequiz

Newquiz updatequiz
Merge pull request #142 from not001praween001/newquiz-updatequiz

Category checked properly.
Merge remote-tracking branch 'upstream/master'
load data from json file to chart