Changed the visibility logic for the FRONTEND and HPO maintenance fields.

    The front end visibility calc was formerly "A<34.9".  This was changed to "A<34".
Nominally the front end laser power is 35 W.

    The green HPO maintenance field visiblity calc was formerly "A+B+C+D>396".  This was
changed to "A+B+C+D>360".  This means that instead of requiring maintenance for a 1% drop
in power from each pump diode, maintenance is now flagged when there is 10% drop for each
diode.

    The remaining "warning" is related to the Visual Basic program on the Beckhoff PC
not running.  This is only required when the spectra of the pump diodes needs to be
recorded.