Explore: Align Explore with Dashboards and Panels (#16823)

* Wip: Removes queryTransactions from state

* Refactor: Adds back query failures

* Refactor: Moves error parsing to datasources

* Refactor: Adds back hinting for Prometheus

* Refactor: removed commented out code

* Refactor: Adds back QueryStatus

* Refactor: Adds scanning back to Explore

* Fix: Fixes prettier error

* Fix: Makes sure there is an error

* Merge: Merges with master

* Fix: Adds safeStringifyValue to error parsing

* Fix: Fixes table result calculations

* Refactor: Adds ErrorContainer and generic error handling in Explore

* Fix: Fixes so refIds remain consistent

* Refactor: Makes it possible to return result even when there are errors

* Fix: Fixes digest issue with Angular editors

* Refactor: Adds tests for explore utils

* Refactor: Breakes current behaviour of always returning a result even if Query fails

* Fix: Fixes Prettier error

* Fix: Adds back console.log for erroneous querys

* Refactor: Changes console.log to console.error

public/app/plugins/datasource/prometheus/components/PromCheatSheet.tsx

@@ -27,7 +27,7 @@ export default (props: any) => (
         <div className="cheat-sheet-item__title">{item.title}</div>
         <div
           className="cheat-sheet-item__expression"
-          onClick={e => props.onClickExample({ refId: '1', expr: item.expression })}
+          onClick={e => props.onClickExample({ refId: 'A', expr: item.expression })}
         >
           <code>{item.expression}</code>
         </div>