* Add new query mode picker with different states for each query. Also really simple migration script

* Populate cross resource dropdowns

* Cleanup. Handle change events

* Add multi select picker for subscriptions

* Fix markup issue

* Prepare for new query mode

* More cleanup

* Handle multiple queries both in ds and backend

* Refactoring

* Improve migration

* Add support for multiselect display name

* Use multiselect also for locations and resources

* Add more typings

* Fix migrations

* Custom multiselect built for array of options instead of variables

* Add url builder test

* fix datasource tests

* UI fixes

* Improve query editor init

* Fix brokens tests

* Cleanup

* Fix tslint issue

* Change query mode display name

* Make sure alerting works for single queries

* Friendly error for multi resources

* Add temporary typings