missing icons

![123](https://cloud.githubusercontent.com/assets/1333220/3795523/96a98c48-1bbc-11e4-8bb3-88649e7f34e0.png)
After https://github.com/bem/bem-components/commit/0b09f205e38cfd535c692ae1a0cfb36a713d90d0
Это нужно только внутри .button_theme_normal.