reorganize and cleanup php server code

server/app/Http/Requests/User/UpdateDetailsRequest.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace Vanguard\Http\Requests\User;
+
+use Vanguard\Http\Requests\Request;
+use Vanguard\User;
+
+class UpdateDetailsRequest extends Request
+{
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array
+     */
+    public function rules()
+    {
+        return [
+            'birthday' => 'nullable|date',
+            'role_id' => 'required|exists:roles,id'
+        ];
+    }
+}