Integrated a scaffolding transformation of the life expectancy function. WIP, as I don't have a good understanding of what the input and output parameters are yet (see #12).
Fixed some issues with the gender values when caching extrapolation tables and added on-demand reading of tables from disk when available.
Implemented CORS support as a preferred alternative to JSONP (which will stay enabled).
Removed various unused Django middleware and reusable apps. Creating a database (`manage.py syncdb`) should no longer be necessary.