reorganize and cleanup php server code

server/app/Http/Requests/Auth/Social/SaveEmailRequest.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace Vanguard\Http\Requests\Auth\Social;
+
+use Vanguard\Http\Requests\Request;
+
+class SaveEmailRequest extends Request
+{
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array
+     */
+    public function rules()
+    {
+        return [
+            'email' => 'required|email|unique:users,email',
+        ];
+    }
+}