## Bug description

Trying to look at insights for feature flags no longer works (see screenshot below).

<img width="1329" alt="" src="https://user-images.githubusercontent.com/5864173/100642031-de24cb00-32fd-11eb-88b4-047c4f82124f.png">


Removing the breakdown works but then you can't see the difference between the binary values.

![image](https://user-images.githubusercontent.com/5864173/100642046-e2e97f00-32fd-11eb-8ae5-4238f899c8b8.png)


## Expected behavior

Insights should be shown as before.


## How to reproduce

1. Click on the insights link on any feature flag row.

## Environment

Cloud (Clickhouse).

## Additional context



#### *Thank you* for your bug report – we love squashing them!

ee/clickhouse/queries/trends/breakdown.py
latest_person_sql=GET_LATEST_PERSON_SQL.format(query=""),
            )
            top_elements_array = self._get_top_elements(elements_query, filter, team_id)
            params = {
                **params,
                "values": top_elements_array,
            }
            breakdown_filter = BREAKDOWN_PERSON_PROP_JOIN_SQL
            breakdown_filter_params = {
                **breakdown_filter_params,
                "latest_person_sql": GET_LATEST_PERSON_SQL.format(query=""),
            }
            breakdown_query = BREAKDOWN_QUERY_SQL
        else:
            elements_query = TOP_ELEMENTS_ARRAY_OF_KEY_SQL.format(
                parsed_date_from=parsed_date_from, parsed_date_to=parsed_date_to
            )
            top_elements_array = self._get_top_elements(elements_query, filter, team_id)
            params = {
                **params,
                "values": top_elements_array,
            }
            breakdown_filter = BREAKDOWN_PROP_JOIN_SQL
            breakdown_query = BREAKDOWN_QUERY_SQL
        null_sql = null_sql.format(
            interval=interval_annotation,
            seconds_in_interval=seconds_in_interval,
            num_intervals=num_intervals,
            date_to=(filter.date_to).strftime("%Y-%m-%d %H:%M:%S"),
        )