#167 Dummy view for importing committees and countries via admin panel.

Adjusted the admin view to load csv files. Things still to do: write a unit test, and make it functional (it currently returns an index error because the csv reader returns an empty list).
After submitting the form, you'll want to redirect back to the admin panel. There should be some way to get the referrer URL from the request, or refer to the change list URL for committees.