fix, bug introduced by f4da130df1122f5bf586b4ffb3b40a1bd0555bf4.
fix, bug introduced by f4da130df1122f5bf586b4ffb3b40a1bd0555bf4.

first launch, all widgets were hidden. The optimization is only set if the docking have been saved at least one.

bgarrels/Coedit,bgarrels/Coedit