build: Replace Codelyzer and TSLint with Angular ESLint

Migrate from the deprecated TSLint to Angluar ESLint. Also fix current
linting issues in the code, in particular:

- Use strict equals operators (=== and !==)
- Remove empty lifecycle methods (mostly ngOnInit)
- Output bindings including aliases should not be named as standard dom
  events (submit)
- Async pipe results should not be negated

src/app/users/view-user/view-user.component.ts

@@ -1,5 +1,5 @@
 /** Angular Imports */
-import { Component, OnInit } from '@angular/core';
+import { Component } from '@angular/core';
 import { ActivatedRoute, Router } from '@angular/router';
 import { MatDialog } from '@angular/material/dialog';
 
@@ -18,7 +18,7 @@ import { ChangePasswordDialogComponent } from 'app/shared/change-password-dialog
   templateUrl: './view-user.component.html',
   styleUrls: ['./view-user.component.scss']
 })
-export class ViewUserComponent implements OnInit {
+export class ViewUserComponent {
 
   /** User Data. */
   userData: any;
@@ -39,9 +39,6 @@ export class ViewUserComponent implements OnInit {
     });
   }
 
-  ngOnInit() {
-  }
-
   /**
    * Deletes the user and redirects to users.
    */