Update data classifier branch with latest automation changes.

[timothyfrankdavies]

This PR makes changes to fji_data_classifier, which has its own pull request here: https://github.com/PyWiFeS/pipeline/pull/29

I've merged from automation into fji_data_classifier using this branch to avoid causing more merge conflicts for @felipeji. Let's merge this PR once all changes to fji_data_classifier are pushed, to avoid causing more conflicts.

I've tested with origin/tdavies__fix_save_data merged in too, and get all the expected output files. That said, I'm still not 100% sure I'm running tests with the same configuration as @felipeji and @CMartinezLombilla, so it might be worth either of you repeating the tests.

[timothyfrankdavies]

I've tried merging without any changes, then taking a git diff, here's a rundown of the actual changes I made:

In src/pywifes/__init__.py:

In src/data_classifier.py:

In reduction_scripts/reduce_data.py:

And a few corresponding changes in that file, e.g.

(Those are all straight copies of the changes I made in the pip install branch from reduce_blue_data.py & reduce_red_data.py over to reduce_data.py.)

[timothyfrankdavies]

Finished testing, I get the expected files. Should be good to go.

[CMartinezLombilla]

All my tests went well as well. Also, everything looks ok to me. Feel free to go with the merging.