code/diff: Fix rendering bug missing some lines.
code/history: Fix "not found: type Finder" error.

This compile error is a bug of sbt. See
http://play.lighthouseapp.com/projects/82401/tickets/444-an-compiling-bug-cant-recognize-the-inner-classes-of-playdbebeanmodel
issue/posting: Do not allow anonymous to comment.

This fixes a test failure.
Merge branch 'master' of https://github.com/nforge/hive into fix-minorcss-130709