added Bold font definitions
MIXER: active mix weight is BOLDed instead of source, because we now have no international Bold definitions.
Bolded numbers are wider than before, but it seems it can fit.
Editing fields are now in FIXED mode to show its real width on LCD.
TODO: font bitmaps have to be altered to center shorter characters to the center of the field.
-font definitions are left aligned and width defined
-numbers have fixed width, but are shrinked
-INVerted strings ara black surrounded from left and right sides
mhotar