Ggm/clean up conf test

[gabegma]

Description:

• Clean-up fixtures and and various tests.
• Fix bug where NO_SMART_TAGS and NO_DATA_ACTIONS were added to the dataset as columns, but the values were never the right ones. This was due because is not in [a for a in ALL_DATA_ACTION_FILTERS if a is not DataAction.no_action] was not working. != works.

Checklist:

You should check all boxes before the PR is ready. If a box does not apply, check it to acknowledge
it.

• PRE-COMMIT. You ran pre-commit on all commits, or else, you
  ran pre-commit run --all-files at the end.
• FRONTEND TYPES. Regenerate the front-ent types if you played with types and routes.
  Run cd webapp && yarn types while the back-end is running.
• USER CHANGES. The changes are added to CHANGELOG.md and the documentation, if they impact
  our users.
• DEV CHANGES.
  • Update the documentation if this PR changes how to develop/launch on the app.
  • Update the README files and our wiki for any big design decisions, if relevant.
  • Add unit tests, docstrings, typing and comments for complex sections.

[Dref360]

Great stuff!
Minor comment

[gabegma]

I found a bug while making changes to fix the tests. I added it in the description of the PR!

[Dref360]

Ah great!

LGTM