When creating a region annotation the response will include both
id (region start id) and endId (region end id), if not only id.

Datasources as configuration

adding the ability to star dashboard in search and dashboard-list

closes #1871 

timestamptz

* Add mA, mV, mW energy units

* Update case to be consistent with other energy units

Also, changes the order of the middleware so that recovery is after the
gzip middleware. Otherwise, a 200 OK is returned instead of a 500 error.

Alerting for prometheus have been depending on the step parameter from each query.
In https://github.com/grafana/grafana/pull/9226 we changed the behavior for step in the
frontend which caused problems for alerting. This commit fixes that by introducing a default
min interval value so alerting always have something to depend on. 

closes #9777