Small fixes to enable the 's_sensorCountingPhotons.m' and 's_sensorSpatialNoisePRNU.m' scripts to run.

s_sensorCountingPhotons.m: d65 -> D65
s_sensorSpatialNoisePRNU.m: boolean(1) -> true
Merge branch 'dev' of https://github.com/isetbio/isetbio into dev