fix bug in save data
add curvilinearAbscissa.m function
add back button and menu in DisplayKymograph Dialog
ValidateSkeleton: apply translation and symmetry separately (use modified version of skell55.m)
update design of ValidateSkeleton dialog
update HypoGrowthMenu.m dialog
add drawSkeleton function, simplify display of kymographs
add function "drawMarker" to cleanup code in DisplayKymograph
KymographDisplay: factorize code for display kymograph display, and fix colormap pbm
DisplayKymograph.m: add marker on Kymograph image
should now work also on RGB images (keeping the red channel)