Restrict before script to stages using a python image

Update dependency django-registration-redux to v2.13

See merge request !191

Update dependency sphinxcontrib-apidoc to v0.4.0

See merge request !196

Update dependency sphinxcontrib-django to v2.5

See merge request !197

Update dependency sphinx-rtd-theme to v1.3.0

See merge request !195

Update dependency sphinx to v7

See merge request !198

Update dependency uwsgi to v2.0.23

See merge request !194

Update dependency Django to v4.2.7

See merge request !192

Code quality improvements

See merge request !179

Add or complete docstrings
Remove code smells (unused variables)

Add or complete docstrings
Remove code smells
Disable irrelevant warnings
Remove empty admin.py (to disable doc generation for an empty module)
Add additional test cases and improve basic test interface (support both 403 and 302 in case the user lacks rights to see a view through optional configuration)
Improve usage of types for API endpoints (e.g., restrict writing endpoints to writing only)

Add or complete docstrings
Remove code smells
Disable irrelevant warnings
Update translations to changed line numbers and line breaks
Move duplicated code for event field pre-population and event timezone adaption to mixins

Add docstrings
Remove code-duplications for dispatching user selection on submission overview
Remove code smells
Remove unused admin.py
Remove unused view in views

I think, that makes sense since it is supposed to be used by the graphical scheduling view

For each job, the whole setup process has to be run. To reduce that impact, both static checks for code and migrations are run in one job

Ignore AKPlanning directory for linting
Improve pylint call

This is needed for correct document generation and besides like it should have been by convention anyhow

Use wildcards, ignore urls files

Improve setup script (add prod and CI parameters)
Improve calling of setup script in CI configuration
Add doc generation action to CI configuration

Add requirements to automatically build the documentation using sphinx
Add basic configuration for documentation
Add django-docs app to deliver documentation as part of the app under /docs/
Add generating/updating of the docs to the setup and update scripts

Add comments
Adjust style to python3 conventions
Remove unused imports

Add comments
Remove unused imports
Simplify statements
Improve linting configuration