Revert "Sketcher: hidding constraints - fix entry into empty sketch"
Revert "Sketcher: hidding constraints - fix entry into empty sketch"

This reverts commit e94a86dd700f5dd79bcc3407eec1b1ae1acf5a86.

Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master