robnyman/Firefox-OS-Boilerplate-App — pull request #53 by DougReeder (2014-05-20 01:53:14+00:00)
Title: Adds storage permission to manifest.

This doesn't actually eliminate the SecurityError on my Keon running 1.3, but I believe it is necessary. Hopefully, you'll only need to tweak this slightly.

The change to webapp.js allows it to show a useful error messsage.