Change directory for settings in manage.py.
Fix a tiny typo.
Fix add'l typos.
Revise model for cities app.
Incl. South in INSTALLED_APPS.
Incl. migrations.
Incl. testdata.json fixture; incl. draft of generate_testdata.py.
Clean up cities/views.py; revise view_two.
Template revisions.
Revise urls.py.
Merge branch 'develop'