test: run Selenium tests on more browsers/JS configurations #144
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By passing the browser type and whether JS is enabled via environment variables, we can run the Selenium front-end tests on all combinations of targeted browsers and JS/no-JS in the CI pipeline. The way it works from the CI perspective is by using a Matrix strategy which is then substituted into an environment variable when calling
manage.py test --tag=selenium
Fixes #143. However, #145 is not addressed, as this PR doesn't tackle Safari. This is because GitHub Actions MacOS workers don't support
services
, which we use to run the postgres database. This can be left for a follow-up PR.