Added widget toastTargetId to the widgetContext

@@ -279,6 +279,7 @@ export class WidgetComponent extends PageComponent implements OnInit, AfterViewI
     this.widgetContext.servicesMap = ServicesMap;
     this.widgetContext.isEdit = this.isEdit;
     this.widgetContext.isMobile = this.isMobile;
+    this.widgetContext.toastTargetId = this.toastTargetId;
 
     this.widgetContext.subscriptionApi = {
       createSubscription: this.createSubscription.bind(this),

@@ -230,6 +230,7 @@ export class WidgetContext {
   $scope: IDynamicWidgetComponent;
   isEdit: boolean;
   isMobile: boolean;
+  toastTargetId: string;
 
   widgetNamespace?: string;
   subscriptionApi?: WidgetSubscriptionApi;