new directory structure

compile libbirdfont without gtk

remove some GTK functions from FontDisplay

remove Gtk from tool box and it's tools

undo for cut background image

align + in background selection

embed background images

cache background thumbnails

always show new backgrounds

scale background

create thumbnails for background images

right shift in glyph view adjusts precision

tab width from font metrix

opacity for edit point icons

fix compiler warning

Initial commit

Initial commit