ImageButton images are badly stretched on iOS

Images in ImageButton are sliced by ​​using CreateResizableImage (as pictured), whose purpose is to make a picture expandable, but we want to change only the image size.

![ios simulator screen shot 27 7 2014 13 10 12](https://cloud.githubusercontent.com/assets/70628/3713777/05564248-1583-11e4-9e44-6fa2f2fb4489.png)