reorganize and cleanup php server code

server/app/Http/Requests/Auth/ApiLoginRequest.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace Vanguard\Http\Requests\Auth;
+
+class ApiLoginRequest extends LoginRequest
+{
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array
+     */
+    public function rules()
+    {
+        return array_merge(parent::rules(), [
+            'device_name' => 'required',
+        ]);
+    }
+
+    /**
+     * Get the needed authorization credentials from the request.
+     *
+     * @return array
+     * @throws \Illuminate\Contracts\Container\BindingResolutionException
+     */
+    public function getCredentials()
+    {
+        $credentials = parent::getCredentials();
+
+        unset($credentials['password']);
+
+        return $credentials;
+    }
+}