Added 'data' dir to gitignore (#1094)
Added 'data' dir to gitignore (#1094)

This is created by `docker-compose up -d` which sets `DJANGOPROJECT_DATA_DIR=./data`.
django/djangoproject.com,django/djangoproject.com,django/djangoproject.com,django/djangoproject.com,django/djangoproject.com,django/djangoproject.com