Use 'Ciao scan list'/'@Sens. ZSensorSens' to scale picoforce z piezo data.

Use 'Ciao scan list'/'@Sens. ZSensorSens' to scale picoforce z piezo data.

vs. my old 'Scanner list'/'@Sens. Zsens'.  The new implementation
is equivalent to the pre-Trevor Volt -> meter conversion.

The values for test/data/picoforce.000 changed from
  5.465e-08 m/V  ('Ciao scan list'/'@Sens. ZSensorSens')
to
  1e-06 m/V      ('Scanner list'/'@Sens. Zsens')
1e-6 m/V is a suspiciously even number for a piezo sensitivity rating,
but the scaled graph of deflection as a function of cantilever
adjusted extension certainly appears more appropriately cantilever
corrected.