Useful when encountering viewlet errors on the resource registry viewlets after an upgrade.
…in steps.zcml: .steps.setDefaultEditor
…run". For "zopectl run" scripts __name__ != '__main__' so setuptools console_scripts can't be run as "zopectl run" scripts. Since buildout doesn't install non-setuptools setup.py "scripts", which don't have to have a __name__ check, this can't really be used anyways, but might be in the future.