FEATURE #1358: prepare environment for login

Initialize routes, middleware and some basic controllers/view for further implementation.

app/Http/Controllers/Admin/LoginForm.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace App\Http\Controllers\Admin;
+
+use Illuminate\Http\Request;
+
+use App\Http\Requests;
+use App\Http\Controllers\Controller;
+
+class LoginForm extends Controller
+{
+    public function showLoginForm() {
+        return view('admin.loginForm.form');
+    }
+}