add any additional monitor to monitor evidence source

[andreasfertig]

Hello Dustine,

I use ControlPlane for a long time. I started when it was MarcoPolo, now it is time to give something back.

The pull request contains a change to the MonitorEvidenceSource. I give presentations on regular bases. Then there is always a second, yet unknown, monitor attached. The serial number may change each time. The patch introduces an "any monitor" with no need to specify a serial number. German translation included.

Best regards,

Andreas