chore: update breaking changes from Angular 8 rc5

Author: VladimirAmiorkov

app/common-screens-category/content-screens/content-scrollable/content-scrollable-example.component.ts

@@ -16,8 +16,8 @@ export class ContentScrollablePageExampleComponent implements OnInit {
     public image: Image;
     public flex: FlexboxLayout;
 
-    @ViewChild("img") img: ElementRef;
-    @ViewChild("content") content: ElementRef;
+    @ViewChild("img", { read: ElementRef, static: false }) img: ElementRef;
+    @ViewChild("content", { read: ElementRef, static: false }) content: ElementRef;
 
     constructor(public page: Page) {
         this.page.backgroundSpanUnderStatusBar = true;

app/ng-ui-category/modal-view-ng/sample-modal-view-module-example/modal-view.ts

@@ -9,7 +9,7 @@ import { DatePicker } from "tns-core-modules/ui/date-picker";
 })
 export class ModalViewComponent implements OnInit {
     public currentdate: Date;
-    @ViewChild("datepicker") datePickerElement: ElementRef;
+    @ViewChild("datepicker", { read: ElementRef, static: false }) datePickerElement: ElementRef;
 
     constructor(private params: ModalDialogParams) {
         this.currentdate = new Date(params.context);

app/ng-ui-widgets-category/web-view/basic-web-view/basic-web-view.component.ts

@@ -12,9 +12,9 @@ import { Label } from "tns-core-modules/ui/label";
 export class BasicWebViewComponent implements AfterViewInit {
     public webViewSrc: string = "https://docs.nativescript.org/";
     public enabled: boolean = false;
-    @ViewChild("myWebView") webViewRef: ElementRef;
-    @ViewChild("urlField") urlFieldRef: ElementRef;
-    @ViewChild("labelResult") labelResultRef: ElementRef;
+    @ViewChild("myWebView", { read: ElementRef, static: false }) webViewRef: ElementRef;
+    @ViewChild("urlField", { read: ElementRef, static: false }) urlFieldRef: ElementRef;
+    @ViewChild("labelResult", { read: ElementRef, static: false }) labelResultRef: ElementRef;
 
     ngAfterViewInit() {
         let webview: WebView = this.webViewRef.nativeElement;

app/ng-ui-widgets-category/web-view/events/web-view-events.component.ts

@@ -14,7 +14,7 @@ export class WebViewEventsComponent {
     public webViewSrc = "https://docs.nativescript.org/";
     public isItemVisible = true;
 
-    @ViewChild("webview") webViewElement: ElementRef;
+    @ViewChild("webview", { read: ElementRef, static: false }) webViewElement: ElementRef;
     private firstUrl = "https://google.com/";
     private secondUrl = "https://docs.nativescript.org/";