feat: add app shell (angular-material)

Add app shell built using angular-material and flex-layout. Refractor
code due to configuration changes.

Fixes #52

src/app/web-app.component.spec.ts

@@ -0,0 +1,27 @@
+import { TestBed, async } from '@angular/core/testing';
+import { RouterTestingModule } from '@angular/router/testing';
+import { TranslateModule } from '@ngx-translate/core';
+
+import { CoreModule } from './core/core.module';
+import { WebAppComponent } from './web-app.component';
+
+describe('AppComponent', () => {
+  beforeEach(async(() => {
+    TestBed.configureTestingModule({
+      imports: [
+        RouterTestingModule,
+        TranslateModule.forRoot(),
+        CoreModule
+      ],
+      declarations: [WebAppComponent],
+      providers: []
+    });
+    TestBed.compileComponents();
+  }));
+
+  it('should create the app', async(() => {
+    const fixture = TestBed.createComponent(WebAppComponent);
+    const app = fixture.debugElement.componentInstance;
+    expect(app).toBeTruthy();
+  }));
+});