Various problems found in django-ida output

[timmc-edx]

I recently used the django-ida cookiecutter. Here are various problems I encountered that we should fix, some of which are in the django-ida cookiecutter and some of which are in the higher level python-template:

• There are two versions of pull_translations, one old-style and a newer one using Atlas. See the OPENEDX_ATLAS_PULL in the Makefile. Atlas is no longer experimental, and now should be default, and the old pull_translations should be removed.
• Remove devstack references and provisioning script
• Remove Dockerfile and references (including docker-publish workflow)
• Wrong Python version in tox reference -- should match Python version in tox.ini, and installed in workflow
• Remove dependency on edx-django-release-util
• Remove ALLOWED_HOSTS = ['*'] or add comment explaining why it is necessary. (This is a security issue.)
• Remove requirements.txt
• Remove PyPI publish workflow from django-ida template -- we don't publish IDAs to PyPI
• Add make compile-requirements (see edx-platform)
• Switch from PIP_COMPILE_OPTS to COMPILE_OPTS -- pip pays attention to all PIP_-prefixed env vars, and we should stay out of that namespace.
• Allow chaining COMPILE_OPTS (accept extensions to it from command line)
• Get rid of clean_tox (tox is supposed to clean itself)
• Healthcheck docstring needs trailing slash on the sample call to avoid redirects
• Healthcheck docstring shouldn't use edx.org example domain
• Update default manage.py from Django's own template (I think that's https://github.com/django/django/blob/4.2.20/django/conf/project_template/manage.py-tpl) -- we've got an old one. Look into other things that should be updated around this as well.
• Override CHANGELOG.rst to not have version strings in headings