- Including ExternalCommandHelper::ping slot to receive pings.
- Including timer to watch last ping in the service to unregister it after reaching 42 seconds without pings.
Caveats:
* copyblocks are not converted yet, but should be similar.
* There is no signaling back to main application which tells when even loop has started, so after password is entered, you need to click F5 to rescan devices
* There are some security checks but are they sufficient