GUI - Form Icons

Features:
* Adds icons to form windows. The icon on the form is the same as the icon on the button that opened that form.
* Adds an icon for the executable.

Crypty Chops icon:
![cryptychops](https://f.cloud.github.com/assets/5778739/1837476/8ef76f2a-7431-11e3-924f-ef2f36d55c7a.png)