Make GitHub Pull Request, Commit, and Blob pages full width

Makes the GitHub Pull Request, Commit, and Blob pages span the full width of the browser, rather than maxing out at the default ~900 pixels.

目前為 2014-05-27 提交的版本，檢視最新版本。

這裡只顯示彼此間有代碼差異的版本。顯示所有版本。