dart-lang/spark — pull request #1130 by sunglim (2014-02-23 17:57:16+00:00)
Title: Add Preference reset button to Setting dialog.

Remove all the sync & local preferences.
This is somewhat necessary to test & development Spark.

review @devoncarew

![image](https://f.cloud.github.com/assets/756988/2240893/c741a616-9cb3-11e3-84bb-8f66fb7de9a7.png)