Navigation: Display Starred dashboards in the Navbar (#51038)

* remove feature toggle, add empty state and fix bug with initial starring

* Extract empty message into lingui

* remove full stop

* add empty message in the backend

* remove unused import

* translate starred + empty starred states

* betterer changes

packages/grafana-data/src/types/featureToggles.gen.ts

@@ -47,7 +47,6 @@ export interface FeatureToggles {
   explore2Dashboard?: boolean;
   tracing?: boolean;
   commandPalette?: boolean;
-  savedItems?: boolean;
   cloudWatchDynamicLabels?: boolean;
   datasourceQueryMultiStatus?: boolean;
   azureMonitorExperimentalUI?: boolean;

packages/grafana-data/src/types/navModel.ts

@@ -16,6 +16,7 @@ export interface NavLinkDTO {
   hideFromTabs?: boolean;
   children?: NavLinkDTO[];
   highlightText?: string;
+  emptyMessageId?: string;
 }
 
 export interface NavModelItem extends NavLinkDTO {