mozilla/butter — pull request #1361 by mjschranz (2012-11-06 16:57:59+00:00)
Title: [#2833] Change first run detection to use localStorage rather than cooki...

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https://webmademovies.lighthouseapp.com/projects/65733/tickets/2833-first-run-dialog-appears-every-time-i-close-my-browser