HLA-837: Invalid Reference to Pyraf

[s-goldman]

Resolves HLA-837

This PR changes outdated mentions of pyraf to python. It also remove several outdated comments.

This PR also adds a couple log files to the .gitignore file that tend to be accidentally added to commits.

Checklist for maintainers

• added entry in CHANGELOG.rst within the relevant release section
• updated or added relevant tests
• updated relevant documentation
• added relevant milestone
• added relevant label(s)
• ran regression tests, post a link to the Jenkins job below.
  How to run regression tests on a PR

[mdlpstsci]

The reference to Python should be consistent in the text: Python or python. Please see comments in text.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (18de0f5) 31.06% compared to head (27bb8d3) 31.23%.

❗ Current head 27bb8d3 differs from pull request most recent head d366768. Consider uploading reports for the commit d366768 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1726      +/-   ##
==========================================
+ Coverage   31.06%   31.23%   +0.16%     
==========================================
  Files         159      159              
  Lines       35102    35102              
==========================================
+ Hits        10905    10964      +59     
+ Misses      24197    24138      -59     

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[mdlpstsci]

Many good updates and clean-up of cruft! Once most of the dust has settled, we may have to sweep through the docs again, but it will be soooooo much easier!