393 replace cypress email tests with pytest and eliminate cypress

[cyplas]

Detailed information:

Replaced the cypress email e2e tests with pytest integration tests, as for the other e2e tests, and got rid of remaining cypress stuff in general.

Closing issues:

List all issues the pull request solve:

• #393
• #406

Test plan (required)

• [X] The PR contains new PyTest unit/integration tests for any function or functional added.
• [X] The PR changes existing PyTest unit/integration tests to keep all tests up to date.
• [X] The PR does not lead to degradation in unit test coverage.
• [X] Project parts affected by changes in this PR was tested manually on your local (using Postman or in any other way). List everything you've tested below:
  • pytest

[codecov-commenter]

Codecov Report

Patch and project coverage have no change.

Comparison is base (1e5462b) 74.30% compared to head (5a450ea) 74.30%.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #490 +/- ## ======================================== Coverage 74.30% 74.30% ======================================== Files 85 85 Lines 2681 2681 Branches 315 315 ======================================== Hits 1992 1992 Misses 657 657 Partials 32 32 ``` Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ClimateMind). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ClimateMind)

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[cyplas]

@danmash Not surprisingly this PR is not passing the circleci cypress check. I'm guessing that the webhook just needs to be deleted (https://github.com/ClimateMind/climatemind-backend/settings/hooks), but I haven't used these before and don't want to make a mess. :)

[cyplas]

Also, I upgraded black (due to the otherwise failing lint test) and its dependencies click and packaging, but I see that click is also explicitly used in ontology processing: https://github.com/ClimateMind/climatemind-backend/blob/develop/app/ontology/commands/process_owl.py#L3.

[cyplas]

And I also wonder about config.yml. I removed clearly cypress stuff, but I suspect that more could be removed (e.g., node), though I'm not sure how to test.

[danmash]

@cyplas Awesome work on this! It was a long way and you did it, congratulations 🎉 Also, I would like to thank @brianpeiris who worked on this milestone. Thank you, guys 👍