Bugfix: "normalizing" a CDockable that is part of a stack, but neither the first nor the second entry, and that was not part of a stack when it was "normal", could cause an IndexOutOfBoundsException
Bugfix: Ignore RuntimeExceptions from Class.forName - some ClassLoaders do not like this method
Tell "Class.forName" which classloader to use, in the hope to produce less errors.