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({})
        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}/insights/{insight_id}", {"name": "a non-filter change"},
        )
        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 test_saving_a_dashboard_with_new_filters_updates_the_dashboard_tile(self):
        dashboard_id, _ = self._create_dashboard({})
        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}", {"filters": {"date_from": "-7d"},},
        )
        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.assertNotEqual(before_save, after_save)
    def test_saving_a_dashboard_with_unchanged_filters_does_not_update_the_dashboard_tile(self):