build: update dependencies

Update dependencies and configure the app for angular material and flex
layout.

Fixes #44

src/app/navigation/navigation.module.ts

@@ -1,6 +1,5 @@
 import { NgModule } from '@angular/core';
 import { CommonModule } from '@angular/common';
-import { NgbModule } from '@ng-bootstrap/ng-bootstrap';
 
 import { CoreModule } from '../core/core.module';
 import { NavigationComponent } from './navigation.component';
@@ -11,7 +10,6 @@ import { NavigationRoutingModule } from './navigation-routing.module';
   imports: [
     CoreModule,
     CommonModule,
-    NgbModule,
     NavigationRoutingModule
   ],
   declarations: [NavigationComponent]