@grafana/ui: Replace various icons using Icon component (#23442)

* Replace icons in dashboard and settings

* Replace icons in alerting

* Update batch of icons

* Implement icons accross various files

* Style updates

* Search: Fix recent and starred icons

* Update styling and details

* Replace new icon created by unicons

* Fix e2e test, styling

* Minor styling updates

Co-authored-by: Clarity-89 <homes89@ukr.net>

public/app/features/folders/FolderSettingsPage.tsx

@@ -57,7 +57,7 @@ export class FolderSettingsPage extends PureComponent<Props, State> {
     appEvents.emit(CoreEvents.showConfirmModal, {
       title: 'Delete',
       text: `Do you want to delete this folder and all its dashboards?`,
-      icon: 'fa-trash',
+      icon: 'trash-alt',
       yesText: 'Delete',
       onConfirm: () => {
         this.props.deleteFolder(this.props.folder.uid);