@Fixture was not working with DataSource bound with ID

Change-Id: If6c54c06497f4d5e20f6251d2ee1013f4dd33ea0
Reviewed-on: https://pirx.atteo.com/gerrit/355
Tested-by: Mr. Jenkins
Reviewed-by: Tomek Piotrowski <tomek.piotrowski@atteo.com>
Update parent

Change-Id: I81c0cbc11a68faf9da36f27b94b0bd4d57a3d429
Reviewed-on: https://pirx.atteo.com/gerrit/357
Tested-by: Mr. Jenkins
Reviewed-by: Tomek Piotrowski <tomek.piotrowski@atteo.com>
Make DatabaseCleaner static

Change-Id: I9f2a5292ac1e50eb43e8616611a097834c5c1f4b
Reviewed-on: https://pirx.atteo.com/gerrit/358
Tested-by: Mr. Jenkins
Reviewed-by: Sławek Piotrowski <sentinel@atteo.com>
Update README

Change-Id: I4d92ac9c1ed831f0d9bd91c386bbf35bc357c986