fix layout, add admins teachers controller, fix students controller
Upload  toan bo
Merge branch 'master' of github.com:t02itjap/elearning
Okie conflict fixed!

Conflicts:
	.settings/org.eclipse.core.resources.prefs
	app/Controller/TeachersController.php
Merge branch 'khanhnd'

Fixed.
Category.ctp & acc_info.ctp chua thong nhat, doi anh Hoan de sua.

Conflicts:
	.settings/org.eclipse.core.resources.prefs
	app/Controller/AdminsController.php
	app/Controller/AppController.php
	app/Controller/StudentController.php
	app/Controller/StudentsController.php
	app/Controller/TeachersController.php
	app/Controller/UsersController.php
	app/Model/IpAddress.php
	app/View/Admins/register_new_manager.ctp
	app/View/Elements/acc_info.ctp
	app/View/Elements/category.ctp
	app/View/Students/change_info.ctp
	app/View/Teachers/change_info.ctp
	app/View/Users/register.ctp