Several important fixes;

* If a VM's XML definition had a self-closing <graphics ... /> element, the auto-switcher to listen on 0.0.0.0 would corrupt the XML file, requiring recovering from the /shared/archive/foo.xml.<timestamp> backup file.
* Improved the handling of bad SSH known_hosts keys.
* Added more to the "new anvil!" install confirmation window

Signed-off-by: Madison Kelly (digimer) <digimer@alteeve.ca>