title: App Engine: How to "reset" the datastore?
body: <p>Well, I'm developing in App Engine (Java) and after a lot of tries and deployments, I need to <em>reset</em> the datastore. There is a lot of random data I added to test performance, and besides that the entities changed a lot, so I need to delete all: data, tables, indexes.</p>
  
  <p>How can I do that?</p>