lloyd/persona-troubleshoot — pull request #1 by warner (2013-11-21 20:22:14+00:00)
Title: detect disabled localStorage too

quick hack: I found that my cookie-blocking addon (CookieMonster) causes
access to `window.localStorage` to throw a SecurityError exception
rather than simply causing a missing property. Loading the
troubleshooting page when CM is blocking cookies causes the localStorage
line to be blank instead of saying "No". This might fix that.