Merge pull request #48 from OKU1987/oku/closed

Oku/closed
Restrict the height of a code viewer.
Merge pull request #54 from krtx/issue-49

Restrict the height of a code viewer.
Add user_names_from_tokens method to App class.

This function will be used by comment.cgi to show user names
instead of login-ids in a comment tab.
Show user names instead of login ids in comments.

Fix #45.