build: update to angular-v9.1.12 (#1215)

Fixes: #1216

src/app/centers/centers-view/center-actions/center-attendance/center-attendance.component.ts

@@ -1,6 +1,6 @@
 /** Angular Imports */
 import { Component, OnInit } from '@angular/core';
-import { MatDialog } from '@angular/material';
+import { MatDialog } from '@angular/material/dialog';
 import { DatePipe } from '@angular/common';
 import { ActivatedRoute, Router } from '@angular/router';
 import { FormControl } from '@angular/forms';

src/app/centers/centers-view/center-actions/manage-groups/manage-groups.component.ts

@@ -9,7 +9,7 @@ import { DeleteDialogComponent } from 'app/shared/delete-dialog/delete-dialog.co
 /** Custom Services */
 import { CentersService } from 'app/centers/centers.service';
 import { GroupsService } from 'app/groups/groups.service';
-import { MatDialog } from '@angular/material';
+import { MatDialog } from '@angular/material/dialog';
 
 
 @Component({

src/app/centers/centers-view/centers-view.component.ts

@@ -1,7 +1,7 @@
 /** Angular Imports */
 import { Component, OnInit } from '@angular/core';
 import { ActivatedRoute, Router } from '@angular/router';
-import { MatDialog } from '@angular/material';
+import { MatDialog } from '@angular/material/dialog';
 
 /** Dialog Imports */
 import { ConfirmationDialogComponent } from 'app/shared/confirmation-dialog/confirmation-dialog.component';

src/app/centers/centers-view/datatable-tab/multi-row/multi-row.component.ts

@@ -2,7 +2,7 @@
 import { Component, OnChanges, OnInit, Input, ViewChild } from '@angular/core';
 import { ActivatedRoute } from '@angular/router';
 import { MatTable } from '@angular/material/table';
-import { MatDialog } from '@angular/material';
+import { MatDialog } from '@angular/material/dialog';
 import { DatePipe } from '@angular/common';
 
 /** Custom Dialogs */
@@ -44,7 +44,7 @@ export class MultiRowComponent implements OnInit, OnChanges {
   showDeleteBotton: boolean;
 
   /** Data Table Reference */
-  @ViewChild('dataTable') dataTableRef: MatTable<Element>;
+  @ViewChild('dataTable', { static: true }) dataTableRef: MatTable<Element>;
 
   /**
    * Fetches center Id from parent route params.

src/app/centers/centers-view/datatable-tab/single-row/single-row.component.ts

@@ -1,7 +1,7 @@
 /** Angular Imports */
 import { Component, Input, OnInit } from '@angular/core';
 import { ActivatedRoute } from '@angular/router';
-import { MatDialog } from '@angular/material';
+import { MatDialog } from '@angular/material/dialog';
 import { DatePipe } from '@angular/common';
 
 /** Custom Components */

src/app/centers/centers-view/notes-tab/notes-tab.component.ts

@@ -1,6 +1,6 @@
 import { Component, OnInit, ViewChild } from '@angular/core';
 import { ActivatedRoute } from '@angular/router';
-import { MatDialog } from '@angular/material';
+import { MatDialog } from '@angular/material/dialog';
 import { FormGroup, FormBuilder, Validators } from '@angular/forms';
 
 /** Custom Components */
@@ -21,7 +21,7 @@ export class NotesTabComponent implements OnInit {
   username: string;
   centerNotes: any;
   noteForm: FormGroup;
-  @ViewChild('formRef') formRef: any;
+  @ViewChild('formRef', { static: true }) formRef: any;
 
 
   constructor(private route: ActivatedRoute,