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 = Dashboard.objects.create(name="My Dashboard", team=self.team)
        response = self.client.post(
            f"/api/projects/{self.team.id}/insights",
            data={
                "filters": {
                    "insight": "FUNNELS",
                    "events": [
                        {
                            "id": "$pageview",
                            "math": None,
                            "name": "$pageview",
                            "type": "events",
                            "order": 0,
                            "properties": [],
                            "math_property": None,
                        },
                        {
                            "id": "$rageclick",