Added Widget Types Help link for adding new widget

ui-ngx/src/app/modules/home/pages/widget/select-widget-type-dialog.component.html

@@ -19,6 +19,7 @@
   <mat-toolbar color="primary">
     <h2 translate>widget.select-widget-type</h2>
     <span class="flex-1"></span>
+    <div [tb-help]="widgetTypesHelpLink"></div>
     <button mat-icon-button
             (click)="cancel()"
             type="button">

ui-ngx/src/app/modules/home/pages/widget/select-widget-type-dialog.component.ts

@@ -21,6 +21,7 @@ import { AppState } from '@core/core.state';
 import { DialogComponent } from '@shared/components/dialog.component';
 import { Router } from '@angular/router';
 import { widgetType, widgetTypesData } from '@shared/models/widget.models';
+import { HelpLinks } from '@shared/models/constants';
 
 @Component({
   selector: 'tb-select-widget-type-dialog',
@@ -30,11 +31,10 @@ import { widgetType, widgetTypesData } from '@shared/models/widget.models';
 export class SelectWidgetTypeDialogComponent extends
   DialogComponent<SelectWidgetTypeDialogComponent, widgetType> {
 
-  widgetTypes = widgetType;
-
-  allWidgetTypes = Object.keys(widgetType);
-
-  widgetTypesDataMap = widgetTypesData;
+  readonly widgetTypes = widgetType;
+  readonly allWidgetTypes = Object.keys(widgetType);
+  readonly widgetTypesDataMap = widgetTypesData;
+  readonly widgetTypesHelpLink = HelpLinks.linksMap.widgetTypes;
 
   constructor(protected store: Store<AppState>,
               protected router: Router,