Update glyphEditor.html to support reducing width/height, shift all

[htmltiger]

Hi,

I have updated it to support for reducing height/width and also shift all chars in all direction.

Thanks.

[marcelstoer]

@ClutchplateDude as you recently improved the editor, I wonder what you think of the improvement proposed here. I am sure you could provide valuable feedback.

[ClutchplateDude]

I think this is great. The ability to change width and height and then move all pixels to adjust is very useful. I know I could have used it when I made some fonts recently and had to restart once or twice cause the dimensions were off.
Code looks pretty solid, too, I would approve this :-) .

[marcelstoer]

I agree; appreciate your feedback.