Nitpick commit

git-svn-id: svn+ssh://svnrepo/projects/nitpick/trunk@7731 561c3618-0fe6-0310-b5d6-fc65c73fee30
Backend functionality for dynamically collapsing comments. Still needs
beautification.


git-svn-id: svn+ssh://svnrepo/projects/nitpick/trunk@7732 561c3618-0fe6-0310-b5d6-fc65c73fee30
Style the comment collapser button to look alright.


git-svn-id: svn+ssh://svnrepo/projects/nitpick/trunk@7733 561c3618-0fe6-0310-b5d6-fc65c73fee30