Merge branch 'support-group-based-restriction' into 'master'

.pre-commit-config.yaml

app/config.py

app/forms/project.py

app/messages/__init__.py

app/messages/message_builders.py

app/models/category.py

app/models/person.py

app/models/project.py

app/templates/pages/project-form.html

app/views/staff.py

app/views/student.py

dev.docker-compose.yml

migrations/versions/c5b560bb3d58_add_category_information.py

.../e794d182f9d3_add_foreign_key_for_category_in_project_.py