umbraco/Umbraco-CMS — pull request #360 by Jwheuvel (2014-04-24 18:37:10+00:00)
Title: Update web.config with .woff mime support

Bootstrap icons aren't visible on clients that are using the .woff variant because the mimetype isn't available/correct. You can verify this by looking at the error in the developer tools inside the browser.

Updated the web.config and added .woff mimetype to the staticContent section of system.webServer.