Connection

Adjust connector retrieval and reconnect
The reconnect does not handle the case when doing action for another user e.g. Import As.
see https://trac.openmicroscopy.org.uk/ome/ticket/11522 and https://trac.openmicroscopy.org.uk/ome/ticket/11754

General permissions testing:
 * Start insight. Leave the application opened
 * Computer goes to sleep
 * Perform action when network is back up

* Unplug to stop connection, perform an action e.g. expand a dataset or select a new object.