Removed Data Matrix ECC 000 to 140 because (a) they don't work properly and (b) nobody uses them anyway!
Also removed some ghosts of Codablock-F - there are some more to find.
Removal of sliders and zoom / rotate buttons.
Rearrangement of buttons to reduce amount of grey space.
Reduction of size of preview and of main window.
Smaller, tigter layout works better on small screens and is less complex.
