refractor: home module (#297)

* Refractor components.
* Redesign home component.
* Add comments.

Fixes #296

src/app/home/home.component.spec.ts

@@ -1,10 +1,6 @@
 import { async, ComponentFixture, TestBed } from '@angular/core/testing';
-import { HttpClientTestingModule } from '@angular/common/http/testing';
 
-import { CoreModule } from '../core';
-import { SharedModule } from '../shared';
 import { HomeComponent } from './home.component';
-import { QuoteService } from './quote.service';
 
 describe('HomeComponent', () => {
   let component: HomeComponent;
@@ -12,15 +8,9 @@ describe('HomeComponent', () => {
 
   beforeEach(async(() => {
     TestBed.configureTestingModule({
-        imports: [
-          CoreModule,
-          SharedModule,
-          HttpClientTestingModule
-        ],
-        declarations: [HomeComponent],
-        providers: [QuoteService]
-      })
-      .compileComponents();
+      declarations: [ HomeComponent ]
+    })
+    .compileComponents();
   }));
 
   beforeEach(() => {