Add a "disable sounds" option to the settings menu.
Use res2h-generated files for embedded resources.
You do not need res2h to build ES, only if you wish to modify resource
files.
Added a simple corner.png and bar.png for a border in the settings menu.
Added ImageComponent::setColorShift(unsigned int color) to change the
OpenGL color array.
Re-added the old fix for the "automatically starting emulator" bug that
got removed during refactoring.