#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).
To be more concise, we can just test the existence of the objects we need to be there, by using the `exists()` Django query:
```python
# This'll probably be multi-line, since it's well over 80 chars.
query1 = Committee.objects.filter(name='DISC', full_name='...', delegation_size=200, special=False).exists()
query2 = ...
```

The next insight is that we need all of the above queries to return `True`. Luckily, Python has a built-in `all` method that takes an iterable of booleans:

```python
self.assertTrue(all((query1, query2, query3)))
```