Upgrade to django42 - Githubissues

Changes because of upgrade to Django 4.2:

Upgrades to Django 4.2
Upgrades docker-compose to use Postgres 13
Replaces django_pwned_passwords with pwned-passwords-django as the other was no longer working after django upgrade
Adds crispy-bootstrap3 (needed with v2 of Django-crispy-forms)
Fixes DateRangeFilter import
Fixes loading recaptcha package
Uses django.urls.re_path instead of url (depracated)
Fixes ordering of group organisers: by last_name, not name
Fixes initialisation of Selenium WebDriver
Adds pytest.ini (selenium was failing after upgrade because it was missing)
Replaces usage of django-cmshelpers send_email method (no longer maintained) with Django's default method
Added command load_seed_data
- Adds an instance of SocialApp if in local or test environment to ensure that website can load
- Without such an instance, the provide_login_url template tag was throwing an error. Came after upgrading to 0.60

Removes table.js as it has outdated JS dependencies, which are a pain to keep updated
This breaks the /groups page though. The page is no longer used, however, but immediately redirected to CEA's community page
So if in the future /groups should be reinstantiated, either tables.js needs to be brought back or some other, new code used

Upgrades docker container to node18 because node14 is no longer supported
- Added NODE_OPTIONS=--openssl-legacy-provider to npm run build, which is needed with node18
Upgrades Sentry
Local groups tests: compares querysets by elements, not count
Fixes reference of django-sluggable to specific commit in requirements.in (not .txt)