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
other_team = Team.objects.create(organization=self.organization, name="other team")
        filter_dict = {
            "events": [{"id": "$pageview"}],
        }
        insight = Insight.objects.create(
            filters=Filter(data=filter_dict).to_dict(), team=self.team, short_id="12345678",
        )
        response = self.client.post(f"/api/projects/{other_team.id}/insights/{insight.id}/viewed")
        self.assertEqual(response.status_code, status.HTTP_404_NOT_FOUND)
        self.assertEqual(InsightViewed.objects.count(), 0)
    def test_cant_create_insight_viewed_for_insight_in_another_team(self):
        other_team = Team.objects.create(organization=self.organization, name="other team")
        filter_dict = {
            "events": [{"id": "$pageview"}],
        }
        insight = Insight.objects.create(
            filters=Filter(data=filter_dict).to_dict(), team=other_team, short_id="12345678",
        )
        response = self.client.post(f"/api/projects/{self.team.id}/insights/{insight.id}/viewed")
        self.assertEqual(response.status_code, status.HTTP_404_NOT_FOUND)
        self.assertEqual(InsightViewed.objects.count(), 0)
    def test_get_recently_viewed_insights(self):