Fix vertical line checkbox having no effect

This fixes issue #35 (closed) The value of the vertical line checkbox was not used It is now used to control the display of the vertical line

requested changes

resolved all threads

approved this merge request

added 4 commits

• 4eee157d...ee66f933 - 2 commits from branch solverstack:master
• 226625e4 - Remove update_vertical_line from Interface_graphic, reducing call stack
• 1e231f7c - Fix vertical line checkbox having no effect

Compare with previous version

added 4 commits

• 1e231f7c...71ee7bf0 - 2 commits from branch solverstack:master
• f8d508f5 - Remove update_vertical_line from Interface_graphic, reducing call stack
• 2546c779 - Fix vertical line checkbox having no effect

Compare with previous version

added 4 commits

• 2546c779...73442a9e - 2 commits from branch solverstack:master
• e7073b48 - Remove update_vertical_line from Interface_graphic, reducing call stack
• 36a466dc - Fix vertical line checkbox having no effect

Compare with previous version

enabled an automatic merge when the pipeline for 36a466dc succeeds

merged

mentioned in commit 2554d286

changed milestone to %Vite 1.4