add TDiary::TDiaryDayWithoutFilter class
Revert "fix #447: recent_comment3 fail on tree view mode"

This reverts commit 5af0caaf8726318edc476ac75734fd74b370543c.
fix SecurityError problem on recent_comment3 with tree view mode
Merge pull request #452 from minimum2scp/fix/recent_comment3-treeview

Fixed recent_comment3.rb with tree view mode, again