Handle files with type of None

[nagem]

Note: there is some logging logic in there that logs when file type/measurements are missing. I decided to leave that in for now.

Review Checklist

• Tests were added to cover all code changes
• Documentation was added / updated
• Code and tests follow standards in CONTRIBUTING.md

[codecov-io]

Codecov Report

Merging #942 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #942      +/-   ##
==========================================
+ Coverage   90.19%   90.19%   +<.01%     
==========================================
  Files          48       48              
  Lines        6417     6418       +1     
==========================================
+ Hits         5788     5789       +1     
  Misses        629      629

Flag	Coverage Δ
#python	90.19% <100%> (ø)	⬆️

Impacted Files	Coverage Δ
api/jobs/rules.py	86.61% <100%> (+0.1%)	⬆️

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