The import progress should be reflected in a progress bar

The progress bar that is shown during the import process does not reflect the time that the import needs. It reflects the time used for the upload.

A second progress bar should reflect the progress of the import.

The progress is calculated from the number of objects that should be imported. For each successfully imported object an event will be created. JOC Cockpit will consider this event to actualize the progress bar. The event contains the number of objects to be imported and the number of already imported objects.