jquery/jquery-mobile — pull request #7348 by allsteady (2014-04-25 00:44:15+00:00)
Title: Button: Remove some style options form the widget.

Hi all

I add css rules for negating a style option.

- data-corner
- data-shadow

![button-negate](https://cloud.githubusercontent.com/assets/3013966/2796603/0a7bfec6-cc12-11e3-9f30-6d0b1cdcce86.png)

If there are any problems or mistakes on that PR, please let me know. Thanks in advance.

Fixes gh-7303
Ref #7304