Calais API creates a Critical warning when keys are missing

Hi,

While I appreciate missing API keys are pretty critical for Calais, it's not a critical issue in the grand scheme of things. Our problem is we have enterprise monitoring on some servers with the Nagios module. One of the customers has not entered any Calais keys yet and, because this is a "Critical" requirement, Nagios panics and tells us the sky is falling in.

The sky is not falling in. It's just fine. Can we downgrade this to a warning, since it's not *system* critical?

Minor point, anyway... just a bit irritating for us.