* Add information that Loki as Prometheus data source is not supported
* Fix ugly error when loki as prometheus used
* Refactor, add test
* Fix type error
* Fix test by passing missing method
* Update public/app/plugins/datasource/prometheus/query_hints.ts
* Remove optionality in prop
* Adding simplified version of query editor based on app flag.
* cleaned up the absolute time range.
* changing placeholder text.
* updated snapshot.
* added some tests.
* adding loki query editor tests.
* updating snapshots.
