When exporting data from [an insight](https://app.posthog.com/insights/oVHjTLUD), the action names weren't exported, making the CSV a little hard to follow.

As a user, I'd expect to see the same data in the export as I see in the table in-app.

<img width="1012" alt="image" src="https://user-images.githubusercontent.com/154479/166958828-9b3add76-633b-4f1d-ad2b-cf1ea2888b95.png">

posthog/api/test/test_insight.py
filter_dict = {
            "events": [{"id": "$pageview"}],
        }
        Insight.objects.create(
            filters=Filter(data=filter_dict).to_dict(), team=self.team, short_id="12345678",
        )
        
        new_team = Team.objects.create(organization=self.organization)
        Insight.objects.create(
            filters=Filter(data=filter_dict).to_dict(), team=new_team, short_id="12345678",
        )
        response = self.client.get(f"/api/projects/{self.team.id}/insights/?short_id=12345678")
        self.assertEqual(response.status_code, status.HTTP_200_OK)
        self.assertEqual(len(response.json()["results"]), 1)
        self.assertEqual(response.json()["results"][0]["short_id"], "12345678")
        self.assertEqual(response.json()["results"][0]["filters"]["events"][0]["id"], "$pageview")
    def test_basic_results(self):
        """
        The `skip_results` query parameter can be passed so that only a list of objects is returned, without