Undev/redmine_close_button — pull request #26 by gferon (2013-07-23 09:26:27+00:00)
Title: Compatibility with Redmine 2.3.0 (untested with other versions)

I could only test this on Redmine 2.3.0. This view hook was in the hook list for Redmine 2.x so I guess it will also work on 2.0.x, 2.1.x and 2.2.x !