chore: fix typo for 'gunicorn' in Django requirements

chore: remove ucamlookup & ucamwebauth from Django image
The automationcommon package brings along ucamlookup & ucamwebauth
so they can be removed from the list of dependencies in the Django image.

chore: fix typo for 'gunicorn' in Django requirements

fix: ensure Django extra requirements are installed
Ensure the Django-specific requirements are passed to the
container when building Django images, rather than just
the requirements specific to Python images.