Cypress (Unit/E2E) Testing

[EmpireErwinKooi]

This PR demonstrates a way to utilize Cypress to E2E test the application both from a dev machine and automated through CI. No need to merge, this PR is just here for ease of finding the code.

To run the cypress tests locally, you need to install cypress on your machine:
npm install -g cypress

Then, within your project directory, go to the kube101 directory and start the runner:
cd django-poll-project/kube101
npx cypress open

Or run the unit test suite:
python manage.py test

[EmpireErwinKooi]

This is for the 5 minute speed talks tomorrow morning.