Rename files so they matches with class names
Catch Win32Exceptions when trying to extract the icon of the process
Same height for each row in the main window

Otherwise processes where an icon couldn't be found would be smaller than other entries
Using alt+tab algorithm from Raymond Chen's blog [1]

Making the list closer to the native alt+tab.

[1]: http://blogs.msdn.com/b/oldnewthing/archive/2007/10/08/5351207.aspx