tambah define() APP constant untuk fix notice di PHP 5.3.25


Salam mas Kandar, 
Izin buat fix notice kecil di check.php soal APP constant. sama menambahkan .gitignore buat vim. 

![panada-notice-constant](https://f.cloud.github.com/assets/1241149/685916/ba2677a6-da47-11e2-95e5-44b4f50163b5.png)