d2a17c36ae
If a configuration file is passed with a command line argument and the file is not found, Radicale shows a warning and continues with the default configuration. There is no reason for doing this, Radicale should just fail. Instead, this PR allows passing an empty string like ``--config ""``. Radicale will use the default configuration in this case, without trying to load the configuration from the common paths. Previously you had to do specify a path that doesn't exist like ``--config /does/not/exist``, which looks a bit ugly and showed a warning message.
Radicale is a free and open-source CalDAV and CardDAV server. For complete documentation, please visit the Radicale online documentation (http://www.radicale.org/documentation).