That's why a conflict occurs when a class has two functions with the same name.

+ Dynamic factory method was removed (improves static code analysis)
+ One file instead of several: Class/DataArr/Students.php, Model/Admin/Students.php and Model/DataArr/Students.php

Radio- & checkbox-buttons have got wrapping label tags, so if you click on the text near such element, onclick event will be raised.

Improves usability. Illustration: http://goo.gl/RdCZaN