URL change back #2
Merge pull request #127 from LI-HE/master

URL change back #2
Feedback enabled selection of category
practice page debug for first delection error
Merge pull request #128 from LI-HE/master

practice page debug for first delection error
URL bug fix #3
Merge pull request #129 from LI-HE/master

URL bug fix #3
Merge pull request #54 from ChrisBoesch/master

Updates