Add menu link to organization page

When merge this pull request, looks like this.

![2013-05-26 1 14 42](https://f.cloud.github.com/assets/1396953/564321/3d734726-c556-11e2-910c-e55fdd26a066.png)

@KitaitiMakoto @banyan 
I edited 2 commit, no problem?
https://github.com/iiirc/iiirc/commit/ea47a27cf2f5581ecda985bd55d20ede4838bb16
https://github.com/iiirc/iiirc/commit/4142490fa5fa1662a3d542e44ee088778e8c33b5