KitodoScript unaware of no selection

[matthias-ronge]

If no process is selected and the Kitodo script is executed, the following message appears: KitodoScript finished. This is particularly misleading if exactly one process was previously filtered by ID. The user believes that the script was executed for this process, in fact nothing happens because of no selection.

Goal: If nothing is selected, an error message for KitodoScript should show, like No process was selected

[matthias-ronge]

Furthermore: If the KitodoScript command starts an asynchronous task, the message “kitodoScript finished” appears immediately, which is superfluous and misleading in this case.