Update NLP scripts and question_classifier code

[snekiam]

What's New?

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change.

Fixes #<> ... (e.g. #9)

Type of change (pick-one)

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

How Has This Been Tested?

Ran flask_api, hit ask endpoint

Checklist (check-all-before-merge)

formatting help: - [x] means "checked' and - [ ] means "unchecked"

• [ ] I documented my code according to the Google Python Style Guide

• [ ] I ran ./build_docs.sh and the docs look fine

• [ ] I ran ./type_check.sh and got no errors

• [ ] I ran ./format.sh because it automatically cleans my code for me 😄

• [ ] I ran ./lint.sh to check for what "format" missed

• [ ] I added my tests to the /tests directory

• [ ] I ran ./run_tests.sh and all the tests pass