refactor project structure

helsinki/program/__init__.py

helsinki/program/admin.py

helsinki/program/fixtures/broadcastformats.yaml

helsinki/program/fixtures/hosts.yaml

helsinki/program/fixtures/musicfocus.yaml

helsinki/program/fixtures/rrules.yaml

helsinki/program/fixtures/showinformation.yaml

helsinki/program/fixtures/shows.yaml

helsinki/program/fixtures/showtopics.yaml

helsinki/program/manage.py

helsinki/program/management/__init__.py

helsinki/program/management/commands/__init__.py

helsinki/program/management/commands/importhosts.py

helsinki/program/management/commands/importnotes.py

helsinki/program/management/commands/importprogramslots.py

helsinki/program/management/commands/importshows.py

helsinki/program/models.py

helsinki/program/settings.py

helsinki/program/templates/404.html

helsinki/program/templates/500.html