discourse/discourse — pull request #152 by xdite (2013-02-13 11:06:45+00:00)
Title: use canonical-url plugin to make view more clean

* make canonical_link more maintainable
* i.e. https://github.com/mbleigh/canonical-url is Rails 2.x Gem, and it's no longer maintained, so I borrow the helper itself and place MIT LICENSE.