MAR-192: Updated test site instructions/deployment for Debian 12 Bookworm:

- Default to recommending Debian 12 Bookworm.
- Update the demo WSGI application for Python 3 use.

MAR-194: Configure static IPv6 addresses for testing of common role:

- Requires some additional steps to be done when preparing the
development machine, since VirtualBox prohibits use of network
subnets that are not explicitly configured for use with private
networks.

MAR-154: Update documentation and test site for Python 2.7 support removal:

- Drop most of the references to Python 2.
- Switch anything that has been previously using Python 2.7 to Python
3.

MAR-189: Drop development upgrade instructions for Molecule/Testinfra:

- This has been done long time ago, and it's just a leftover artifact
at this point (has no real value any longer).

MAR-189: Updated instructions and configuration for test site for Debian 11 Buster:

- Use a more generic Emacs package name.

MAR-149: Improved documentation for the test site (more details):

- Cover server names.
- Cover additional names that should be resolvable towards the web
server (for reaching sample web applications)
- Include links for testing the sample web applications.

MAR-152: Update documentation regarding removal of support for Debian 8 Jessie:

- Updated introductory information about the project.
- Removed references to Debian 8 Jessie from documentation.
- Updated release notes.

MAR-132: Updated test site instructions:

- Mention that either Jessie or Stretch can be used for installation.
- Updated command for getting the SSH key fingerprints to use the dig
tool.

MAR-129: Added information about test tools to development documentation:

- Document use of mcabber/mutt configuration files for trying out the
XMPP/mail server.

MAR-129: Update development documentation for testsite:

- Update versions of VirtualBox/Vagrant that have been tested.
- Move notes about how the servers have been set-up to towards
beginning of section describing the test site.
- Put deployment of test site into a sub-section of its own.

MAR-128: Updated script for running tests and documentation:

- Updated script, removing parts related to separate platform testing
from old version of Molecule.
- Updated instructions for running the test script.

MAR-110: Implemented script for running tests for all roles:

- Updated gitignore file to ignore test reports.
- Updated instructions for running tests.
- Added Bash script that wraps around Molecule and allows output of reports into
a directory.

MAR-30: Fixes for multiple platforms and more extensive testing:

- Include instructions on how to run tests against different platforms (Debian
versions).
- Use correct base box for Debian Stretch when testing role 'preseed'.
- Use fixed hostnames when runnig teets for role 'preseed'.
- Make sure to test preseed configuration file when providing overrides for a
host that does not include overrides as well in role 'preseed'.

MAR-30: Added documentation related to development:

- Moved existing test site documentation under the new 'Development' chapter.
- Added instructions for preparing development environment.
- Added instructions for running Ansible role tests.
- Added requirement input and txt files for use with pip-tools.