As long as the responder uses only text-single, list-single and
boolean fields, it is possible to invoke and complete a command.
Other field types are not implemented now in dataforms.py.
If the entity has at least one command exposed, it will be displayed as
a radio button. Other changes: run python interpreter without optimalizations,
otherwise asserts doesn't work. Names of widgets in the glade file were
changed a bit.
Tomasz Melcer