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
dashboard_id, _ = self._create_dashboard({"name": "the dashboard's name"})
        insight_id, _ = self._create_insight(
            {"filters": {"events": [{"id": "$pageview"}], "properties": [{"key": "$browser", "value": "Mac OS X"}],},},
        )
        self._add_insight_to_dashboard([dashboard_id], insight_id)
        before_save = DashboardTile.objects.get(dashboard__id=dashboard_id, insight__id=insight_id).filters_hash
        response = self.client.patch(
            f"/api/projects/{self.team.id}/dashboards/{dashboard_id}", {"name": "the dashboard's name"},
        )
        self.assertEqual(response.status_code, status.HTTP_200_OK)
        after_save = DashboardTile.objects.get(dashboard__id=dashboard_id, insight__id=insight_id).filters_hash
        self.assertIsNotNone(before_save)
        self.assertIsNotNone(after_save)
        self.assertEqual(before_save, after_save)
    def _create_insight(
        self, data: Dict[str, Any], team_id: Optional[int] = None, expected_status: int = status.HTTP_201_CREATED
    ) -> Tuple[int, Dict[str, Any]]:
        if team_id is None:
            team_id = self.team.id
        if "filters" not in data:
            data["filters"] = {"events": [{"id": "$pageview"}]}
        response = self.client.post(f"/api/projects/{team_id}/insights", data=data,)
        self.assertEqual(response.status_code, expected_status)
        response_json = response.json()
        return response_json.get("id", None), response_json
    def _create_dashboard(self, data: Dict[str, Any], team_id: Optional[int] = None) -> Tuple[int, Dict[str, Any]]: