Added missing, required modules to setup.py

Added missing but required modules by julython to setup.py.

Added modules:
        'south',
        'fabric >= 1.5.1'
        'django-social-auth >= 0.7.12',
        'django-debug-toolbar >= 0.9.0',
        'django-tastypie >= 0.9.0',
        'requests',
        'iso8601 >= 0.1.4',