Added first Web App skeleton. Updated README.

.gitignore

README.md

docker-compose.yml

images/webapp/.gitignore

images/webapp/Dockerfile

images/webapp/code/manage.py

images/webapp/code/migrations_vanilla/README.txt

images/webapp/code/migrations_vanilla/__init__.py

images/webapp/code/rosetta/__init__.py

images/webapp/code/rosetta/base_app/__init__.py

images/webapp/code/rosetta/base_app/api.py

...rosetta/base_app/management/commands/base_app_populate.py

images/webapp/code/rosetta/base_app/migrations

images/webapp/code/rosetta/base_app/models.py

images/webapp/code/rosetta/base_app/templates/login.html

images/webapp/code/rosetta/base_app/templates/main.html

images/webapp/code/rosetta/base_app/tests/__init__.py

images/webapp/code/rosetta/base_app/tests/common.py

images/webapp/code/rosetta/base_app/tests/test_apis.py

images/webapp/code/rosetta/base_app/views.py