refractor: delete redundant files (#295)

* Remove obsolete index.ts files.
* Remove About Module.

Fixes #294

src/app/login/login.module.ts

@@ -2,7 +2,7 @@
 import { NgModule } from '@angular/core';
 
 /** Custom Modules */
-import { SharedModule } from '../shared';
+import { SharedModule } from '../shared/shared.module';
 import { LoginRoutingModule } from './login-routing.module';
 
 /** Custom Components */