Update psycopg2, djangorestframework, pytz
Merge pull request #310 from jvc26/update-requirements

Update psycopg2, djangorestframework, pytz
Updated to django-1.7
Define TEST_RUNNER
Remove south dependency
Create new-style Django 1.7 migrations for all apps
Replace old fixture-based data with migration based data
Remove initial_data loading
Replace old CELLTYPE_LIST with new JSON output, as now migrations add initial data
APIs should not start adding user facing messages, this will be made consistent in a different changeset
Merge in upstream requirements changes
Merge pull request #311 from jvc26/django-1.7

Django 1.7