Add product-details and remove django-countries.
Populate and translate the countries list with product-details.
Add pyuca for proper sorting of unicode strings.

* Install product_details and pyuca via github urls
* Use forked pyuca for Py2.7 support.
* Use forked product_details for fixed setup.py.
Merge pull request #100 from pmclanahan/add-product-details

Populate and translate the countries list with product-details.