Any way to clear application data in b2g/Firefox OS?

Is there any way to clear application data without uninstalling the whole app?
Say an app signs someone into Google, there is no way to clear that account data without directing them to a Google logout page. It would be nice to just be able to clear all the login/cookie data that gets stored in the app. This is useful with OAuth - the tokens can be cleared but the Google account can't be logged off (easily).

There doesn't seen to be a way to clear data at this moment for apps, you can have a look into app permissions or try deleting the app and reinstalling.

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