***Prometheus**: Align $__interval with the step parameters. [#9226](https://github.com/grafana/grafana/pull/9226), thx [@alin-amana](https://github.com/alin-amana)
***Prometheus**: Autocomplete for label name and label value [#9208](https://github.com/grafana/grafana/pull/9208), thx [@mtanda](https://github.com/mtanda)
***Postgres**: New Postgres data source [#9209](https://github.com/grafana/grafana/pull/9209), thx [@svenklemm](https://github.com/svenklemm)