Prevent users from submitting H&E CZI input files to IF pipeline

[philipmac]

The current multichannel IF pipeline only checks file type is .czi, and assumes input is IF (i.e. not H&E).

This leads to unexpected behavior if HE inputs are run.

Fail pipeline upon detection?

if IlluminationType !="Epifluorescence":
   raise Exception

Test for H&E and do the right thing (wrt neuroglancer shader) ?

elif IlluminationType=="Transmitted":
  the.right.thing(do)

Note, the way this pipeline is set up (AFAIK) the only input that can be used (from the perspective of the user) exists in a specially named dir HQ_images.