Upload change of checker and some style
Merge branch 'master' of https://github.com/dragoon20/IF3038-2013

Conflicts:
	src/pages/dashboard.php
Merge branch 'master' of https://github.com/dragoon20/IF3038-2013
Update database schema for task and category, and add script for database change (runs on linux command)
Ubah banyak hal, terutama model, detail task, dashboard, css, register