fmbt-editor: parse model filename from test.conf

If fmbt-editor is launched with a test configuration file as the only
commandline parameter, the editor tries to parse model filename from
the file.
eyenfinger: log executed commands only on failure
AAL/Python: fix checking action 0 executions

Executing action 0 body must never succeed in AAL/Python.
Exceptions raised when trying to execute action/tag 0 adapter.
Merge
Merge remote-tracking branch 'devel/devel'