drawHoles accounts for non existant hole in case of intersection occuring outside of face
edges are drawn in grey if their angle is below the angleTresh
mess with tabs as joinery:more simple
try to fix translation issues with hole position
fix redraw hole bug
ake edge deselection possible
remove addHoles; not being used now
add truncated tab, based on tri-tab
fix truncated tab self-intersection, grouping for new segments
small fixings, prepare to create segments accoring to user cuts